Seventh International Scientific Conference, Al-Azhar ...

ABSTRACT BOOK

Seventh International Scientific Conference, Al-Azhar University (ISCAZ 2010), Environment, Development, and Nanotechnology, 22 – 24 March 2010, Cairo, Egypt.

Under the Auspices of his Excellency Prof.Dr. Ahmed Mohammad El-Tayyb Honorary Chairman President of Al-Azhar University Prof. Dr. Mohammad H. Awad Chairman Dean, Faculty of Science, Al-Azhar University Prof. Dr. Ahmed M. El-Mezayen Co-Chairman Vice-Dean, Faculty of Science, Al-Azhar University Prof. Dr. Mostafa M. Emara Coordinator

Date: 22—24 March 2010

Conference Program Day One: No.

Mon : 22-03-2010

Place

Start

End

1

Reception and Registration

Main Hall

08:00 09:30

2

Opening Ceremony

Main Hall

09:30 10:30

3

Honor scientists

Main Hall

10:30 11:00

4

Cofee Break

Main Hall

11:00 12:00

Main Hall

12:00 01:00

Main Hall

01:00 03:00

Opening Session Polymer Colloids: From Design to Industrial and Biomedical Applications Prof. Dr. Mohamed S. El-Aasser ...Vice President for International Affairs, Lehigh University, USA 5 CHAIR Prof. Dr. Sultan Abu Orabi Yarmouk University, JO Prof. Dr. Muhammad H. Awad Chairman of Seventh International Scientific Conference

Second Session [ Round Table Discussion] Environment, Development, Nanotechnology and Quality of Higher Education Prof. Dr. Sultan Abu Orabi .........................................Yarmouk University, JO Prof. Dr. Mahmoud Hashem AbdelKadder ...................German University, EG Prof. Dr. Maghawry Diab ............................................Menofia University, EG Prof. Dr. Abdelhay Obaid ............................................Academy Akhbar Elyom, EG 6

Prof. Dr. Abdallah Barakat ..........................................Helwan University, EG CHAIR Prof. Dr. Mohamed Raafat Mahmoud Misr for Tech. & Sci. University, EG Prof. Dr. sedeek Afifi El-Nahda University, EG Prof. Dr. Mohamed S. El-Aasser Lehigh University, USA

7

Poster - Sec01

Hall[Poster] 03:00 03:30

8

Poster - Sec02

Hall[Poster] 03:30 04:00

9

Lunch at Nasr City Sporting Club

Nasr City

04:00 05:30

Plenary (POL) Speaker

Seventh International Scientific Conference, Al-Azhar University (ISCAZ 2010), Environment, Development, and Nanotechnology, 22 – 24 March 2010, Cairo, Egypt.

Plenary (POL) Speaker Polymer Colloids: From Design to Industrial and Biomedical Applications

Mohamed S. El-Aasser Vice President for International Affairs Department of Chemical Engineering Emulsion Polymers Institute Lehigh University Bethlehem, Pennsylvania 18015, USA https://fp2.cc.lehigh.edu/inemuls/MEAhome.htm

Abstract A wide variety of polymer colloids, more commonly known as latexes, comprising many families of polymers are prepared via free-radical emulsion polymerization and copolymerization of their respective monomers for use in a wide range of applications. These include synthetic rubber, floor coatings, paints, adhesives, binders for non-woven fabrics, high-impact polymers, latex foam, and additives for construction materials such as cement and concrete. Polymers that cannot be prepared by emulsion polymerization (such as ionic polymers and epoxies) can often be prepared by direct emulsification of their polymer solutions followed by solvent removal; the resulting latex is referred to as an artificial or pseudo-latex. Artificial latexes are prepared by applying miniemulsion process technology. The latter enables the formation of relatively stable submicron droplets through the use of a combination of a conventional surfactant and additionally a costabilizer that has the dual characteristics of very low water solubility and low molecular weight. This technology is applied more popularly in preparing synthetic latexes by miniemulsion polymerization of submicron size monomer droplets as the main sites for particle nucleation and growth via free radical polymerization. This has led to many interesting applications in latex technology including the preparation of hybrid latexes, high solids latexes, polymerization of highly water-insoluble monomers and macromonomers, controlled molecular weight via living free radical polymerization, controlled polymer microstructure and morphology, and encapsulation and entrapment of inorganic particles, metal particles, dyes, drugs, oils, and perfumes. The fundamental knowledge gained over the past 50 years in the art and science of polymer colloids and latex technology allows one to design and tailor-make polymer particles with the ability to exercise systematic control over many of the latex properties. These properties include particle size and distribution (narrow to broad to multimodal), and particle morphology including domain location, shape, nano to micron size monodisperse particles, and chemical composition. Other morphological features within the particles can be varied such as porosity with controlled pore size and their loading with various inorganic and metal particles and other fluids. The chemical nature of functional groups on the particle surfaces and their number density can be varied as well. The designed particles are finding use in numerous biomedical applications such as medical diagnostics and therapeutics, immunoassays, biological cell labeling, biosensors and drug delivery systems. Biographical Sketch Mohamed El-Aasser, Professor of Chemical Engineering (1974 – present), served Lehigh University as Provost and Vice President for Academic Affairs (2004 – 2009), Dean of the P.C. Rossin College of Engineering and Applied Science (2001 – 2004), Chairman of the Department of Chemical Engineering (1996 - 2001) and Director of the Emulsion Polymers Institute (1989 – 2009). El-Aasser received his undergraduate BS and Master's degrees at the University of Alexandria, Egypt and his Ph.D. at McGill University, Montreal, Canada. He is internationally known for his research in the field of polymer colloids and emulsion polymerization processes, including miniemulsions which he and his colleagues at Lehigh pioneered. He and his students and postdoctoral fellows authored 400 published articles. He holds 9 U.S. patents, and published 5 edited books. He advised 65 Ph.D. students and co-advised 24 Ph.D. students, and also advised 53 M.S. students, 31 postdoctoral fellows. He currently advises 3 Ph.D. candidates. He has given numerous presentations and invited lectures at national and international conferences and universities. He received numerous awards, including the 2007 Fellow of the American Chemical Society’s Division of Polymeric Materials Science and Engineering, the 2002 Roy W. Tess Award in Coatings, the American Chemical Society, co-shared the 1985 NASA Inventor of the Year Award, and Lehigh University’s 1999 Hilman Extraordinary Service Award, and co-shared the 1988 Eleanor and Joseph Libsch Research Award.

Invited Speakers

Seventh International Scientific Conference, Al-Azhar University (ISCAZ 2010),

::. ..

Environment, Development, and Nanotechnology, 22 – 24 March 2010, Cairo, Egypt.

Nanotechnology .::. Invited Lecture 1 286

TUE : 23-03-2010

HALL[A]

ORAL - SEC01 ( 1 )

NANO - 6

EG

PROF. HASSAN AZZAZY

09:00

: 09:30

[email protected]

NANOPARTICLES: SYNTHESIS, PROPERTIES & BIOMEDICAL APPLICATIONS Hassan M. E. Azzazy, PhD, DABCC, FACB Department of Chemistry, The American University In Cairo, New Cairo, Egypt

ABSTRACT Nanoparticles are proposed as key components of novel diagnostic and therapeutic strategies. An assortment of nanoparticles, with various sizes, shapes, composition, surface chemistry, and unique photophysical properties have already been constructed. Their extremely small size allows them to penetrate cells and interact with cellular molecules. Quantum dots (QDs), gold nanoparticles (AuNPs), and superparamagnetic nanoparticles (SPMNs) are the most popular nanostructures employed for biomedical applications. These nanoparticles can be conjugated to recognition moieties such as antibodies or oligonucleotides for detection of target biomolecules. Nanoparticles have been utilized in immunoassays, DNA diagnostics, bioseparation of specific cell populations, cellular imaging, and photodynamic therapy. In this presentation, simple methods for in-house preparation of QDs, AuNPs, and SPMNs will be presented. Key photophysical properties of the three nanoparticles will be discussed in context of their various biomedical applications. Research activities to develop colorimetric assay for the detection of viruses in human serum will be summarized.


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Nanotechnology .::. Invited Lecture 2 286

TUE : 23-03-2010

HALL[A]

ORAL - SEC06 ( 1 )

NANO - 11

PK

PROF. FARHAN SAIF

10:30

:

11:00

[email protected]

RECURRENCE TRACKING MICROSCOPE BASED ON BOSE EINSTEIN CONDENSATES Farhan Saif , Hayat Khan Department of Electronics, Quaid-i-Azam University, Islamabad, Pakistan Department of Electronics, Quaid-i-Azam University, Islamabad, Pakistan

ABSTRACT Recurrence Tracking Microscope (RTM) scans surface structures with atomic size resolution. The device works on the principle of quantum recurrences of cold atoms reflected by an atomic mirror. The mirror is connected with a cantilever which moves on the surface under study. RTM is better than the existing devices as STM and AFM, as it scans all kind of surfaces and has no limitation due to impurity atoms. The resolution of the RTM is further increased as we use Bose Einstein Condensates.


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Physics and its applications .::. Invited Lecture 3 286

TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 1 )

PHY - 42

EG

PROF. ALAEDDIN A. BAHGAT

01:00 : 01:30 [email protected]

SETING A COMPUTER ASSISTED EXPERIMENT Alaeddin A. Bahgat Department of Physics, Faculty of Science, Al-Azhar University, Nasr city 11884, Cairo, Egypt

ABSTRACT Nowadays computers are indispensible object in our daily life. This is also true in modern experimental laboratory. Usually one pays a great deal to have a computer assisted instrument without even bothering himself of how it is working. In the present presentation we will shade some light on how to build your own computer assisted experiment with the least expenses. Only you may need one of the common known ports a serial port, parallel port, A/D or D/A converters, sensor and with no doubt a good computer program. In this presentation we are going to demonstrate our experience in setting up computer assisted experiments which facilitate a fast and accurate collection of data for analysis and interpretations. Experiments such as: Magnetic AC susceptibility, Differential thermal analysis, Specific heat of materials, Mechanical creep, Ferromagnetic and Ferroelectric Hysteresis loops, Dc electrical properties of materials, Ac Dielectric properties of materials.


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 1 )

PHY - 60

EG

PROF. HUSSAM H. HASSAN


POLYMERIC COMPOSITES (SCIENCE & TECHNOLOGY) Prof. Dr. Hussam H. Hassan phsics department, faculty of science, cairo university

ABSTRACT Part One : Polymer Science 1. Introduction 2. Classification of polymers a) Chemical characterization b) Physical characterization c) According to regularity d) According to composition e) According to molecular mass f) According to shape g) According to chemical structure h) According to types of monomers i) According to Crystallinity j) According to polarity k) According to temperature effect l) According to mechanical effect m) According to radiation effect 3. Milling 4. Vulcanization 5. Pressing 6. Research activities • Antistatic Polymeric Composites • Conductive & Semi conductive Polymeric Composites • Thermally Sensitive Polymeric Composites • Pressure Sensitive Polymeric Composites • Optically Sensitive Polymeric Composites • Heat Resistant Polymeric Composites • Oil Resistant Polymeric Composites

•

Pressure

Resistant

Polymeric

Composites

•

Shock

Absorber

Polymeric

Composites • Abrasion Resistant Polymeric Composites • Nuclear Shielding Polymeric Composites • Radar Wave Absorber Polymeric Composites • Magnetic Polymeric Composites • Polymeric Fibers • Cyclic Fatigue Resistant Polymeric Composites • Thermoelectric power/ Polymeric Composites 7. Polymer technology ( Industrial Application ) • Preparation of Polymeric Coating Composites According to International Standardization • Vulcanization of Polymeric Composites Under the Heating Press to get Sample Sheet • Prepare test pieces with dumble shape for mechanical test • Mechanical Test • Electric Test • Dielectric Test • Thermal Test • Swelling Test • Abrasion Test • Compression Test • Adhesion test • Bad Adhesion • Good Adhesion • Final Product 8. Example of Different Products • Spare Parts of Concrete mixer • Spare Parts of Concrete Pump • Spare Parts of Buses & Trucks • Spare Parts of Cars • Spare Parts for Water Stations • Rubber Belts • 9. Recycling of Waste Polymeric Materials 10. Repairing Belts in The Production Location


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 1 )

11:00

PHY - 31

EG

PROF. MOHAMED EL-OKR

:

11:30

[email protected]

SPECTROSCOPY OF RARE EARTH DOPED GLASSES M. M. EL-OKR Phys. Dept. Faculty of science, AL-Azhar Univ.

ABSTRACT Such complex wave functions usually are not used, but a linear combinations give a real wave functions as; Transition Metals: Rare Earth Elements (Lanthanides): Type of optical transitions in RE

Intraconfigurational: 4f N

Interconfigurational: 4f N

4f N-1

4f N , gives long lifetimes & sharp absorption lines 5d transitions, gives large oscillator strengths, broad

absorption bands, and fast response times. Energy Level Diagram for RE (Dieke Diagram)JuddOfelt Theory: Quimby Method: The calculated values Is used to calculate the goodness of the fitting through the equation Luminescence: Samarium doped borate glasses. Absorption Spectrum: Time Resolved Luminescence: Upconversion: Hole Burning (HB): All memory devices depend on permanent variation in given material. The most simple example is the magnetic devices. It depends on the spin orientation

magnetic non-isotropic energy. Optical

memory devices depend principally on local variation of the R.I as shown Hole Burning

It

defines as remove from an inhomogeneously broadened spectral line a narrow, homogeneous line causing the appearance of dip (hole) in the resultant spectrum. HB 2- Persistent HB Transient spectral (HB) state other than the original G.S

Hole Burning 1- Transient

It refers to storage of the ion population in some

In which the laser beam is resonant with one of the

transition between particular set of hyperfine levels of the ground and excited state. following figure: Persistent spectral holeburning PSHB occurs due to

In the

The system is said to

undergo (PSHB) when the optical transition frequencies are altered permanently (long time). This occurs when those ions resonant with laser are photoionized, producing a new valence state whose optical absorption is totally different, so the removal of the original absorption results in spectral hole. Ex. Divalent rare earth ions such as Sm2+ and Eu2+ in both ordered and disordered systems. Why it takes place at low temperature?

In general, optical absorption

takes place when an incoming photon has exactly the right amount of energy to take an electron from one allowed energy level to another. (1) The change of the environment The spectral holes are burned by the rearrangement of the hydroxyl bonds surrounding active ions (ex. Eu2+ or Sm2+).


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Chemistry and its applications .::. Invited Lecture 6 286

TUE : 23-03-2010

HALL[B]

ORAL - SEC02 ( 1 )

CHEM - 59

EG

PROF. MOHAMED ABDEL GAWAD ZAYED


CHEMISTRY OF BIODIESEL AS BIOMASS ENERGY SOURCE IN EGYPT. IT IS A HOPE AND TARGET mohammed zayed D.Sc. Analytical and Inorganic Chemistry, Chemistry Department, Faculty of Science, Cairo University

ABSTRACT Biodiesel is a fuel made from vegetable oil that runs in any unmodified diesel engine. It can be made from any vegetable oil including oils pressed straight from the seed (virgin oils) such as soy, sunflower, canola, coconut and jatropha. Biodiesel can also be made from recycled cooking oils from fast food restaurants. Even animal fats like beef tallow and fish oil can be used to make biodiesel fuel. Biodiesel is a clean, renewable and domestically produced diesel fuel, which has many characteristics of a promising alternative energy resource. The most common process for making biodiesel is known as transesterification. This process involves combining any natural oil (vegetable or animal) with virtually any alcohol, and a catalyst. There are other thermochemical processes available for making biodiesel, but transesterification is the most commonly used one due to the simplicity and high energy efficiency. The high energy efficiency of transesterification is an important aspect of Biodiesel, which makes it favorable in the competitive energy market. The following is a transesterification reference guide that can be used to process Biodiesel on an experimental scale for classroom demonstrations. It can be done with basic equipment and common chemicals. Be sure to use extreme caution when carrying out this procedure, the methanol and catalyst are toxic, and give off potentially harmful vapors. Proper personal protection is imperative, including thorough ventilation. Links will also be given for more information on building more sophisticated small-scale (“homebrew”) biodiesel processors. This demonstration can be done with a food processor or a large, empty (and clean) soda bottle (using shaking to mix the oil and methoxide).


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Chemistry and its applications .::. Invited Lecture 7 286

TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 1 )

CHEM - 63

EG

PROF. AHMAD SAMI SHAWALI


THE BUBBLING FOUNTAIN OF CHEMICAL SELECTIVITIES IN REACTIONS OF NITRILIMINES IN SHAWALI'S LABORATORY Ahmad Sami Shawali, D. Sc. Professor of Physical organic Chemistry, Faculty of Science, University of Cairo, Giza, Egypt

ABSTRACT The chemistry of nitrilimines and their precursors has attracted the interest of numerous investigators all the world. At present there are more than 1775 articles and patents dealing with their reactions and applications in various fields of chemistry and industry. In Shawali's laboratory, the various aspects of their reactions namely the kinetics, stereoselectivity, siteselectivity, regio-selectivity as well as periselectivity and their synthetic utility in heterocyclic chemistry have been studied from practical and theoretical points of view since 1970. The goal of the present lecture is to highlight the various selectivities encountered in 1,3-dipolar cycloaddition and 1,5-electrocyclization reactions of nitrilimines that have studied in Shawali's laboratory. Qualitative rationalization of these selectivities in terms of the frontier molecular orbital (FMO) theory and Fukui's principle as well as their quantitative prediction by means of HSAB principle and the density finctional theory (DFT) will be outlined. Also, the lecture will shed some light on the utility of such reactions as facile synthetic strategies for synthesis of annulated triazoles and their C-nucleosides of biological and pharmacological interest.


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Astronomy and Meteorology .::. Invited Lecture 8 286

TUE : 23-03-2010

HALL[B]

ORAL - SEC12 ( 1 )

AST - 23

IT

PROF. FRANCO PORCELLI

ASTRONOMY Franco Porcelli Scientific Attache Italian Embassy in Egypt

ABSTRACT

01:00

:

01:30

[email protected]


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Astronomy and Meteorology .::. Invited Lecture 9 286

WED : 24-03-2010

HALL[B]

ORAL - SEC17 ( 1 )

AST - 22

US

PROF. XUBIN ZENG

09:00

:

[email protected]

AVANCES IN LAND-ATMOSPHERE INTERACTION STUDIES Xubin Zeng The university of Arizona, Tucson, USA

ABSTRACT

09:30


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Development, Environment and Quality Assurance .::. Invited Lecture 10 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC14 ( 1 )

DEQ - 14

EG

PROF. AHMAD HEGAZY


LIFE CYCLE AND IMPACTS ON SUSTAINABILITY OF THE ENVIRONMENT Prof. Ahmad K. Hegazy Faculty of Science, Cairo University

ABSTRACT Life cycle analysis (LCA) or “Total system approach” is crucial evaluation to identifying opportunities for improvement of an environmental situation. This evaluation identifies the energy use, material inputs and wastes generated during a product’s life; from extraction and processing of raw materials, to manufacture and transport of the product to the marketplace, and finally, to use and dispose. The major goal of LCA offers the advantage of designing developmental operations to use less energy and resources, and produce less waste. LCA offers practical and sustainable solutions to environmental problems including reduction of resource consumption and prevent pollution and health risks, reduction of the product life-cycle costs and impacts, building community and enhancement of social development, and achieving multiple economic benefits. However, some drawbacks are expected, as LCA may be time consuming, that requires large amounts of data. Also, LCA results are often dependent upon the assumptions made, and sometimes not suitable for assessing all environmental impacts. The tools for support of environmental sustainability and decision-making are discussed. These include: Life Cycle Assessment (LCA), Cleaner Production (CP), Environmental Impact Assessment (EIA), Cost-Benefit Analysis (CBA), and Eco-efficiency. The trade-offs among stages of a product’s life cycle and the expected environmental, economic and social impacts are considered. The Best Practice approach for environmental sustainability, using the hierarchical LCA applications is reviewed on some case studies either from bottom-up or top-down sides. In bottom-up analysis, the target problem is analyzed first without a concrete goal. This approach may not be adequate for the achievement of specific goals. The top-down analysis scheme starts with defining the assessment goals and aims to evaluate the accomplishment of specific goals. The limitation of this approach is that pre-defined goals sometime have to be compromised with indicator availability.


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TUE : 23-03-2010

HALL[D]

ORAL - SEC14 ( 2 )

DEQ - 16

EG

PROF. ABDULRADY ALMARAGHY


"APPLICATION OF QUALITY ASSURANCE AND ACCREDITATION TO DEVELOP THE HIGHER EDUCATION" Prof Dr. Abdulrady Hassan Almaraghy Departmet of Zoology, Faculty of Scince, Alazhar University, Cairo, Egypt

ABSTRACT " . . .


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WED : 24-03-2010

HALL[D]

ORAL - SEC19 ( 1 )

09:00 : 09:30

DEQ - 7

EG

PROF. MOSTAFA EMARA

[email protected]

THE ROLE OF AL-AZHAR UNIVERSITY IN MAINTAINING GREEN ENVIRONMENT M. Emara Director of Science Center for Detection and Remediation of Environmental Hazards (SCDREH)

ABSTRACT This presentation will deal with the well known environmental term "green Environment" and how can Universities help in maintaining such an environment .AL-Azhar University is taking a positive role in creating centers of Excellency just to fulfill this goal. One of these centers "Science center for detection and remediation of environmental hazards" (SCDREH) since 2000. We shall take this center as a case study in terms of its goal, the services offered. Also specific environmental examples in studying air, water, soil and food, will be presented in full details.


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WED : 24-03-2010

HALL[D]

ORAL - SEC19 ( 4 )

DEQ - 20

EG

PROF. MOSTAFA SALEH

10:00

:

11:30

[email protected]

TOWARDS A HABITAT CLASSIFICATION FRAMEWORK IN EGYPT Mostafa Abbas Saleh Faculty of Science, Al Azhar University, Nasr City, Cairo, Egypt

ABSTRACT Biodiversity is generally defined as the species of living things, their intra-specific variations and the habitats in which they live. In many ways, biodiversity is the key resource base for life on earth, including human life. Accurate identification of types, distribution and characteristics of habitats is crucial to the management and conservation of the diversity of species and subspecific variations. In Egypt, habitats are traditionally classified and described on a purely geographic basis, i.e. Western Desert, Eastern Desert, Sinai and the Nile Valley, with each geographical region being divided into several sub-regions. This type of classification is also supported by major geomorphologic features that distinguish these vast geographical regions. However, ecological features of any given habitat are determined by a multitude of factors that go far beyond the mere geographical location and geomorphologic setting. In this paper I introduce a framework for classification of land-based habitats of Egypt. The classification is primarily based upon the availability of water, as the most critical resource, and the physical factors that control its accessibility to plant and animal physiological systems and processes. The proposed habitat classification framework also takes into account the multitude of factors that seem to contribute to the ecological features of each habitat type and hence its characteristic biota.


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Development, Environment and Quality Assurance 14 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC14 ( 5 )

DEQ - 1

EG

DR. MOSTAFA EMARA

02:30

:

02:45

[email protected]

TREATMENT OF WASTE WATER USING NEWLY DEVELOPED HYBRID NANO ION EXCHANGERS M. Emara , I. elsabagh , N. M. Refaat Scdreh, Al-Azhar University, Cairo, Egypt Faculty of Science(Girls), Al-Azhar University, Cairo, Egypt Faculty of Pharm., Nahda University, Cairo, Egypt

ABSTRACT Throughout recent decades, the wastewater treatment industry has identified the discharge of heavy metals, nutrients, including phosphates and nitrates, into waterways as a risk to natural environments due to the serious effects they may cause. This study reports the results of using fixed bed sorption process very effectively in removing high concentrations of heavy metals (200-500ppm) namely Copper, Zinc, Cadmium, and Lead, nutrients and other anionic pollutants. The sorbent used , referred to as hybrid ion exchanger or HIX, namely HIX-C used in removal of heavy metals, HIX-A selectively removes phosphates and nitrates from the background of competing anions, both types of exchangers combine excellent mechanical and hydraulic properties of spherical beads. Equally important, no pH adjustment, pre- or posttreatment was warranted. HIX was amenable to efficient in situ regeneration and reuse for multiple cycles with high efficiency. The current paper describes the simple chemical – thermal technique to produce a hybrid spherical macroporous polymeric cation exchanger beads within which HMO ( where M = Co, Mn, Ni,andCu) particles have been uniformly irreversibly dispersed, these hybrid exchangers were used in complete removal of one of the most hazardous pollutants Cadmium.


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TUE : 23-03-2010

HALL[D]

ORAL - SEC14 ( 6 )

DEQ - 2

EG

DR. MOSTAFA EMARA

02:45

:

03:00

[email protected]

CADMIUM REMOVAL USING NEWLY HYBRID SORBENT M. Emara , Aida A.Salmanb , Medhat M.El moselhy , Samah A.Fattah Scdreh, Al-Azhar University, Cairo, Egypt Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt Scdreh, Al-Azhar University, Cairo, Egypt

ABSTRACT The contamination of water by toxic heavy metals is a worldwide environmental problem. Discharges containing cadmium in particular, are strictly controlled due to the highly toxic nature of this element and its tendency to accumulate in the tissues of living organisms. This study reports the results of an extensive investigation pertaining to cadmium removal properties of a polymeric/inorganic hybrid sorbent. Each hybrid sorbent particle is essentially a spherical macroporous cation exchanger bead within which agglomerates of nanoscale hydrated Fe oxide (HFO) particles have been uniformly and irreversibly dispersed using a simple chemical–thermal treatment. The new sorbent, referred to as hybrid ion exchanger or HIX, combines excellent mechanical and hydraulic properties of spherical polymeric beads with selective cadmium sorption properties of HFO nanoparticles at circum-neutral pH. A fixed- bed sorption process was performed as a function of solute concentration, contact time, pH, and exchanger mass. The effect of other competiting ions on the removal process was then studied including calcium ions as an example of light metals, lead ions as an example of other heavy metal. The effect of different anions either as single or as mixture and at different concentrations

was

also

investigated.

Results

showed

that

by

decreasing

cadmium

concentration the removal efficiency improved which gave a prediction that this new sorbent can efficiently remove cadmium ions from low concentration cadmium bearing streams. The removal efficiency improved as the time of contact increased and also by increasing the exchanger mass. Equally important no pH adjustment. Besides the absence of cadmium, the treated water composition was identical to that of influent water. HIX was amenable to efficient in situ regeneration with diluted hydrochloric acid and could subsequently be brought into service following a short rinse with carbon dioxide sparged water. Repeated use of the same HIX particles during various laboratory investigations provided strong evidence that the new sorbent possesses excellent attrition resistance properties and retains its cadmium removal capacity over cycles.


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WED : 24-03-2010

HALL[D]

ORAL - SEC19 ( 6 )

10:45

DEQ - 3

EG

DR. MOSTAFA EMARA

:

11:00

[email protected]

REMOVAL OF ACID RED 44 DYE FROM ITS LIQUID WASTE UNDER WIDE PHOTOCATALYTIC CONDITIONS M. Emara , L. F. Ismail, , N. S. Zaghlol , O. K. Hussien Scdreh, Al-Azhar University, Cairo, Egypt Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt Scdreh, Al-Azhar University, Cairo, Egypt

ABSTRACT The homogeneous photocatalytic oxidation of Acid Red 44 (AR44) with Fenton (Fe2+/H2O2), photo-Fenton,

(Fe2+/H2O2/UV),

and

Fenton-like

(Fe3+/H2O2),

photo-Fenton-like

(Fe3+/H2O2/UV) had been investigated in aqueous solution [H2O2] = 5.0x10-2 M and [AR44] = 1.0x10-5M, 7.0x10-5 M and at pH = 3.0. However, decolorization exhibited different rates for the two systems. The degradation rate in Fenton and photo-Fenton oxidation was much faster than that of the Fenton-like and photo-Fenton-like reaction in the initial stages. The effects of operating parameters are also investigated, such as: Fe2+and Fe3+ concentrations, initial dye concentration, and H2O2 concentration and light intensity. Decolorization of model wastewater was rather successful using Fe2+ or Fe3+. In the case of Fenton and photo-Fenton oxidation, the extent of degradation was 96%, 99% after 175, 66 minutes respectively, when the Fe2+ ion concentration was

1 x 10-4 M. When the Fe2+ ion concentration was >1.0 x 10-4 M, the extent

of dye degradation was 100%, 100% after 25, 20 mints, respectively. For Fenton-like and photoFenton-like oxidation, if the Fe3+ ion concentration was

1.0xl0-4 M, dye degradation was only

97%, 97% after 200,158 minutes, respectively. However, the extent of degradation was 98%, 99% after 64, 38 minutes, respectively at a Fe3+ ion concentration 1.0x10-4 M.


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WED : 24-03-2010

HALL[D]

ORAL - SEC19 ( 10 )

DEQ - 17

EG

PROF. NAGLA ZAKY ELALFY


CELLS AND TISSUE CULTURES IN VITRO TECHNIQUES Prof Dr. Nagla Zaky Elalfy Department of Biological Science, Faculty of Education, AinShams University,Roxy, Cairo

ABSTRACT A more recent advance is the use of animal tissue culture along with genetic modification using viral and bacterial vectors and gene guns to create genetically engineered organisms. Animal Tissue culture has several critical requirements. In vitro systems include subcellular fractions, Primary cell cultures, Cell lines, Organs and Slices . Advantages and Disadvantages of cell and tissue cultures will be discussed. Steps Culturing Animal tissue and uses will be included. Sources of cells and tissues cultures are very important in vitro laboratory. Some experiments use in vitro laboratory; Basic Techniques to grow viruses and study virus-host Interactions, Making a primary cell line and Culturing Fibroblasts of mammalian cells.

Nanotechnology


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Nanotechnology 18 286

TUE : 23-03-2010

HALL[A]

ORAL - SEC01 ( 2 )

09:30

NANO - 1

EG

ASSOC.PROF. ARAFA ALY

: 09:45

[email protected]

OPTICAL PROPERTIES OF ONE-DIMENSIONAL PHOTONIC CRYSTALS Arafa H Aly Department of Physics, Beni-Suef University, Beni-Suef, Egypt

ABSTRACT We

have

investigated

the

optical

properties

of

one-dimensional

high

temperature

superconducting-dielectric photonic crystal (HTcScDPCs) composed of superconductor and dielectric layers. The variance of the intensity and the bandwidth of the transmission and reflection are strongly dependent on the different thicknesses, different temperatures, and different incident angles.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC01 ( 3 )

NANO - 2

EG

DR. WAEL BASSUONI

09:45

:

10:00

[email protected]

THE APPLICATIONS OF NANOTECHNOLOGY IN MEDICAL FIELD (CANCER) M. Emara , M. W. Bassuoni Scdreh, Al-Azhar University, Cairo, Egypt Scdreh, Al-Azhar University, Cairo, Egypt

ABSTRACT Nanotechnology involves manipulating properties and structures at the nanoscale, often involving dimensions that are just tiny fractions of the width of a human hair. Nanotechnology is already being used in products in its passive form, such as cosmetics and sunscreens, and it is expected that in the coming decades, new phases of products, such as better batteries and improved electronics equipment, will be developed and have far-reaching implications. One area of nanotechnology application that holds the promise of providing great benefits for society in the future is in the realm of medicine. Nanotechnology is already being used as the basis for new, more effective drug delivery systems and is in early stage development as scaffolding in nerve regeneration research. Moreover, the National Cancer Institute has created the Alliance for Nanotechnology in Cancer in the hope that investments in this branch of nanomedicine could lead to breakthroughs in terms of detecting, diagnosing, and treating various forms of cancer. the manufacturing technology of the 21st century," should let us economically build a broad range of complex molecular machines (including, not incidentally, molecular computers). It will let us build fleets of computer controlled molecular tools much smaller than a human cell and built with the accuracy and precision of drug molecules. Such tools will let medicine, for the first time, intervene in a sophisticated and controlled way at the cellular and molecular level. They could remove obstructions in the circulatory system, kill cancer cells, or take over the function of subcellular organelles. Just as today we have the artificial heart, so in the future we could have the artificial mitochondrion. Given such molecular tools, we could design a small device able to identify and kill cancer cells. The device would have a small computer, several binding sites to determine the concentration of specific molecules, and a supply of some poison which could be selectively released and was able to kill a cell identified as cancerous.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC01 ( 4 )

NANO - 3

EG

DR. MOSTAFA EMARA

10:00

: 10:15

[email protected]

ENVIRONMENTAL HEALTH HAZARDS OF NANOPARTICLES M. Emara , M. W. Bassuoni , Mahmoud M.H.Emara Scdreh, Al-Azhar University, Cairo, Egypt Scdreh, Al-Azhar University, Cairo, Egypt Chemistry Departement, Faculty of Sciense, University of Alexandria

ABSTRACT Nanotechnology is an essentially modern scientific field that is constantly evolving as commercial and academic interest continues to increase and as new research is presented to the scientific community. The field’s simplest roots can be traced, albeit arguably, to 1959 but its primary development occurred in both the eighties and the early nineties. In addition to specific scientific achievements such as the invention of the STM, this early history is most importantly reflected in the initial vision of molecular manufacturing as it is outlined in three important works. Overall, an understanding of development and the criticism of this vision is integral for comprehending the realities and potential of nanotechnology today. On the other hand, ideal understanding of the multiple effects of nanoparticles on human health are of prime importance in order to evaluate the risk of these effects and to minimize it if possible. Moreover,the route of administration of nanoparticales into the body must be clear in order to evaluate it is effects in different body systems. While ingestion(drug delivary) and skin penetration are potential exposure routes for engineered nanomaterials , the inhalation route for airborne nanomaterials has perhaps received the most attention .For some materials, studies have shown that the toxicity of inhaled particles increases as particle size becomes smaller and as the overall surface area of inhaled material becomes larger .Although, particles shape, amount and character had a great effects.Nanoparticles inhaled into the respiratory system, nanotubes (depending on their content) are capable of eliciting an inflammatory, granulomatous, and fibrogenic response. Concerns regarding dermal penetration include (1) skin or other organ cytotoxicity, (2) accumulation in skin or other organs resulting in toxicity after long-term exposure, (3) metabolism to even smaller particles with potentially increased toxicity, or (4) toxicity of photoactivated nanoparticles .Additionally, ingested nanoparticles had different effects on cardiovascular system and brain. Finally, To use the potential of Nanotechnology in Nanomedicine, full attention is needed to safety and toxicological issues.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC06 ( 2 )

NANO - 10

EG

PROF. WAFAA EL-SAYED

11:00

: 11:15

[email protected]

FUNCTIONALIZATION OF VISCOSE/POLYESTER FABRIC SURFACE BY SOL-GEL APPROACH EL-Sayed W.A. , Abo El-Ola S.M. , Eladwi M.M. , Kotb R.M. Women’s College, Ain Shams University, Cairo, Egypt Textile Research Division, National Research Center, Cairo, Egypt Women’s College, Ain Shams University, Cairo, Egypt Women’s College, Ain Shams University, Cairo, Egypt

ABSTRACT In this study viscose/polyester fabric was successfully modified by sol-gel process to imparting high ultraviolet radiation scattering property in the fabric surface. Active ingredient was titanium isopropoxide. The viscose/polyester fabric was padded with nanosol solution dried and cured at low temperature (ºC) designed for practical application. The pristine and treated fabrics have been characterized by UV-Spectrophotometer, scanning electron microscopy (SEM), Transmission electron microscopy (TEM) , Fourier transform infrared (FTIR), crease recovery angles, surface roughness, color strength, as well as mechanical properties. The treatment forms a thin layer of titania on the surface of viscose/polyester fibers, and the treated fabric shows much improved protection against ultraviolet radiation with ultraviolet protection factor (UPF) of 40< or excellent protection according to the Australian/NewZealand Standards. The treated fabric also tested for washfastness. The results show that ultraviolet protection rating of the treated fabrics can be maintained at good protection even after 40 home laundering. The mechanical strength tests of the treated fabric shows no adverse effect from the treatment. The treated fabric attain antibacterial properties against Staphylococcus aureus( S. aureus) and Escherichia coli (E. coli) bacteria.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC06 ( 3 )

NANO - 9

EG

PROF. WAFAA EL-SAYED

11:15 :

11:30

[email protected]

NEW APPROACH TO UV-BLOCKING TREATMENT OF COTTON FABRICS EL-Sayed W.A. , Abo El-Ola S.M. , Eladwi M.M. , Kotb R.M. Women’s College, Ain Shams University, Cairo, Egypt Textile Research Division, National Research Center, Cairo, Egypt Women’s College, Ain Shams University, Cairo, Egypt Women’s College, Ain Shams University, Cairo, Egypt

ABSTRACT Cotton fabrics were successfully modified by sol-gel process to impart ultraviolet blocking properties via titanium nanosol treatment. The treatment forms a thin layer of titania on the surface of fabrics, ultraviolet protection factor values were calculated and show much improvement, in addition to excellent UV protection rating of the treated fabrics can be maintained even after 40 home laundering. The prepared nanosol was investigated by Transmission electron microscopy; while the fabric surfaces have been investigated by scanning electron microscopy and Fourier transform infrared. Antibacterial properties were assessed and the treated fabrics show high bacterial reduction. The effect of the treatment on mechanical properties, color strength and fastness properties was investigated, although there is no negative effect on them, they are also affected by sol-gel treatment.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC06 ( 4 )

NANO - 8

EG

DR. NESREEN EL-NAKIB

11:30

:

11:45

[email protected]

NANO–TEXTILE TREATMENT TO PRODUCE SELF-CLEANING FABRIC AND ITS BIOLOGICAL IMPACT. B) THE BIOLOGICAL IMPACT OF SELF CLEANED COTTON FABRIC TREATED WITH TIO2 NANOPOWDER Maha M. Mohamed , Wafaa A. EL-Sayed , Nesreen A. EL-Nakib Ain Shams University- Women's College Ain Shams University- Women's College Ain Shams University- Women's College

ABSTRACT The biological impact of cotton treated fabric with photocatalytic Titanium (IV) oxide, nanopowder, 99.7% anatase to produce self cleaning was investigated. Fourteen male New Zeland white rabbits have body weigh ranged from 1,300 – 1,700 gm, were divided into two groups. One, control, was dressed untreated cotton fabric. The other, test, was dressed treated fabric for 5 weeks. Body weight, absolute and relative weights of organs, blood picture, serum total protein, albumin, alanine transaminase (ALT) and aspartate transaminase (AST), total bilirubin, urea, creatinine, alkaline phosphatase (ALP), lactate dehydrogenase (LDH), Creactive protein (CRP) and titanium were estimated. The test group gave rise to significant higher level of serum bilirubin, AST, ALT, urea, creatinin, ALP and (CRP) while serum total protein, albumin and (LDH) showed no significant change as compared to control. In the test group, titanium was detected in the skin as shown by scanning electron microscopy and in serum as shown by inductively coupled/ Argon plasma (iCAP). Using light microscope, histological analysis of liver, heart, lung, spleen, kidney and skin sections revealed focal necrosis associated with leucocytes infilteration in most these organs. These findings indicate that TiO2 nanoparticles could leave the treated fabric and penetrate the skin and cause potential adverse health effects. Further studies must be carried out to determine the suitable application in clothing and textile medium.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC06 ( 5 )

NANO - 7

EG

DR. NESREEN EL-NAKIB

11:45

:

12:00

[email protected]

NANO–TEXTILE TREATMENT TO PRODUCE SELF CLEANING FABRIC AND ITS BIOLOGICAL IMPACT. A) NANO–TEXTILE TREATMENT TO PRODUCE SELF CLEANING FABRIC. Wafaa A. EL-Sayed , Maha M. Mohamed , Nesreen A. EL-Nakib Women's College, Ain Shams University, Cairo, Egypt Women's College, Ain Shams University, Cairo, Egypt Women's College, Ain Shams University, Cairo, Egypt

ABSTRACT Cotton fabric treated with titanium IV Oxide nanopowder 99.7 anatase (5nm in size) to enhance cotton inferior properties. Dip-pad-dry-cure technique has been used in the treatment process.The optimization of the treatment condition has been reached via studying TiO2 concentration, temperature and time of the treatment bath as well as curing temperature and time. The liquor ratio of the treatment bath has also studied.Both untreated and treated cotton fabric subjected to investigate via scanning electron microscopy, X-Ray diffractometry as well as IR spectroscopy.Physico-mechanical properties of the investigated fabrics (warp and weft sett, fabric weight, stiffness, thickness, crease recovery angles, tearing resistance, tensile strength and elongation at break) were determined.The treated cotton fabrics possess significant photocatalytic self cleaning properties of Hibiscus stain when exposed to sunlight. As a result some textile industrial application as outdoor applications have been performed to enhance poor soiling behavior.


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TUE : 23-03-2010

HALL[POSTER]

POSTER - SEC04 ( 15 )

NANO - 4

EG

PROF. M EL-DESOKY


EFFECT OF NANOCRYSTALLIZATION ON THE ELECTRICAL CONDUCTIVITY ENHANCEMENT AND MÖSSBAUER HYPERFINE PARAMETERS OF IRON BASED M.M. El-Desoky , A.G. Mostafa , F. A. Ibrahim , M. Y. Hassaan Department of Physics, Faculty of Education, Suez Canal University, Al-Arish, Egypt Department of Physics, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt. Department of Physics, Faculty of Education, Suez Canal University, Al-Arish, Egypt Department of Physics, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt.

ABSTRACT Effect of nanocrystallization on the electrical conductivity enhancement and Mössbauer hyperfine parameters of iron based glasses M. M. El-Desoky *, A.G. Mostafa2 , F. A. Ibrahim 1 and M. Y. Hassaan2 1Department of Physics, Faculty of Education, Suez Canal University, AlArish, Egypt 2Department of Physics, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt. Selected glasses of Fe2O3- PbO2 –Bi2O3 system have been transformed into nanomaterials by annealing at temperature close to crystallization temperature (Tc) for one hour. The effects of the annealing of the present samples on the structural and electrical properties were studied by Mössbauer spectroscopy, transmission electron micrograph (TEM), differential scanning calorimeter (DSC) and dc conductivity ( ). Mössbauer spectroscopy was used in order to determine of the states iron and its hyperfine structure. The effect of nanocrystalization on the Mössbauer hyperfine parameters did not induce significant modifications in present glasses. However, in case of glass-ceramic nanocrystals show a distinct decrease in the quadrupole splitting ( ), reflecting an evident decrease in the distortion of structural units like FeO4 units. The Mössbauer parameters of the nanocrystalline phase exhibit tendency to increase with PbO2 content.TEM of as quenched glasses confirm the homogeneous and essentially featureless morphology. TEM of the corresponding glass-ceramic nanocrystals indicate nanocrystals embedded in the glassy matrix with average particle size of 32nm. The glass transition temperature (Tc) was observed to decrease with PbO2 content. The glassceramic naocrystals obtained by annealing at Tc exhibit improvement of electrical conductivity up to four orders of magnitude than the starting glasses. This considerable improvement of electrical conductivity after nanocrystallization is attributed to formation of extensive and dense network of electronic conduction paths " easy conduction paths” which are situated between iron nanocrystals and on their surface.


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TUE : 23-03-2010

HALL[POSTER]


NANO - 5

EG

PROF. M HASSAAN


EFFECT OF SULFUR ADDITION AND NANOCRYSALLIZATION ON THE ELECTRICAL CONDUCTIVITY OF BARIUM VANADATE GLASS CONTAINING IRON M. Y. Hassaan , F. M. Ebrahim , A. G. Mostafa , M. M. El-Desoky Al-Azhar University, Faculty of Science, 11884 Cairo, Egypt Al-Azhar University, Faculty of Science, 11884 Cairo, Egypt Al-Azhar University, Faculty of Science, 11884 Cairo, Egypt Physics Department, Faculty of Education, Suez Canal University, El-Arish, Egypt.

ABSTRACT Six glass samples of composition 75 V2O5 + 10 BaO + 15 Fe2O3 mol%, further more sulfur which was added as 0, 10, 15, 20, and 25 mass percent to each sample mixture, respectively. The glass samples were prepared at 1050°C for an hour then quenched in air. Each sample was measured by XRD, DSC, TEM, Mössbauer effect and d.c. conductivity. The prepared samples were annealed at temperature close to its crystallization temperature, and then the previous measurements were repeated again for the heat treated samples. The results showed that the treatment process caused the formation of V2O5 and FeVO4 nanocrystals of size 17nm dispersed in the glass matrix. The sulfur addition reduced only the vanadium ions to V4+, while it was found iron ions as Fe3+ only which means that it is not affected by sulfur as a reducing agent. The d.c. conduction enhanced due to the small polaron or electron hopping from V4+ to V5+ and F3+ ions. Nanocrystals were found embedded with the glass matrix due to the heat treatment. The nanocrystals exhibit much higher conductivity and much lower activation energy than the as received glasses. Such nanocrystals are low thermally stable as sulfur content increases. This considerable enhancement of electrical conductivity after nanocrystallization refers to the formation of extensive and dense network of electronic conduction paths which are situated between V2O5 nanocrystals and on their surfaces


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


NANO - 12

EG

MR. AHMED TOHAMY

03:20

:

04:00

[email protected]

APPLICATIONS OF NANOTECHNOLOGY IN BIOLOGY AND MEDICINE Ahmed Fathy Mohammad , Salah Samir Ali Cairo university/ Cairo/ Egypt Cairo university/ Cairo/ Egypt

ABSTRACT Nanotechnology is the technology that has allowed for the control, manipulation, study, and manufacture of structures and devices at the atomic and molecular scale. It has the potential to create many new materials and devices with wide-ranging applications, such as in medicine, electronics, and energy production. In future, it may be used to engineer nanobots which can act as personalized doctors acting round the clock. Or it may be used to create tiny cell-bombs which seek and destroy tumor cells while making sure that healthy cells are unaffected. Apart from medical applications, this technology may be employed to harvest energy directly from photosynthetic bacteria and convert it into electricity. In theory, medical nanotechnology could make us smarter, stronger and give us other abilities could we continue to call ourselves human, or would we become transhuman -- the next step on man's evolutionary path?


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TUE : 23-03-2010

HALL[POSTER]


NANO - 15

EG

PROF. AHMED RADWAN

03:20

:

04:00

[email protected]

EFFICIENT EVALUATION OF RELEVANCE FEEDBACK ALGORITHMS FOR XML CONTENT-BASED RETRIEVAL SYSTEMS Ahmed. A. A. Radwan , Bahgat A. ABDEL-LATEF , Awny SAYED , Mohamed M. ABDALLAH The Dean of Faculty of computer science Nahda yuniversity Baney Swaif assictantant Prof. Department of computer science, Faculty of Science, Minia University, Egypt assictantant Prof. Department of computer science, Faculty of Science, Minia University, Egypt Pst graduate student at Department of computer science, Faculty of Science, Minia University, Egypt

ABSTRACT Information retrieval and feedback in XML are rather new fields for researchers; natural questions arise, such as: how good are the feedback algorithms in XML IR? Can they be evaluated with standard evaluation tools? Even though some evaluation methods have been proposed in the literature it is still not clear yet which of them are applicable in the context of XML IR, and which metrics they can be combined with to assess the quality of XML retrieval algorithms that use feedback. In this paper, we create an efficient XML retrieval system that based on a query refinement by making a feedback processing and extend the main query terms with new terms mostly related to the main terms. Our system based on the keyword-based queries whether on the main query or in the relevance feedback processing instead of the XPath and structure query languages which are more complex. For measuring the efficiency of our system we use the extended Relevance Feedback algorithms (Residual Collection and freezeTop) for evaluating the performance of the XML search engines. Compared to previous approaches, we aim at removing the effect of the results for which the system has knowledge about their relevance, and at measuring the improvement on unseen relevant elements. We implemented our proposed evaluation methodologies by extending a standard evaluation tool with a module capable of assessing feedback algorithms for a specific set of metrics.


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TUE : 23-03-2010 HALL[POSTER] POSTER - SEC04 ( 19 ) NANO - 14

EG

03:20

:

04:00

ASSOC.PROF. MOHAMED MOHY ELDIN [email protected]

PREPARATION OF POLY (ARYLONITRILE-CO-METHYL METHACRYLATE ) (P (AN-COMMA)) NANOSPHERES FOR COVALENT IMMOBILIZATION OF -GALACTOSIDASE - " NANOSPHERES MODIFICATION AND CHARACTERIZATION" M. S. Mohy Eldin , A.A. El.Zatahry , M. B. EL-Sabbah , M. R. Elaassar Polymer materials research Department, Institute of Advanced Technology and New Material, Mubarak City for Scientific Research and Technology Applications, New Borg El-Arab City 21934, Alexandria, Egypt. Polymer materials research Department, Institute of Advanced Technology and New Material, Mubarak City for Scientific Research and Technology Applications, New Borg El-Arab City 21934, Alexandria, Egypt. Department of chemistry, faculty of science, Al-Azhar University, Cairo, Egypt. Polymer materials research Department, Institute of Advanced Technology and New Material, Mubarak City for Scientific Research and Technology Applications, New Borg El-Arab City 21934, Alexandria, Egypt.

ABSTRACT Immobilized proteins and enzymes were widely investigated in medical field as well as in food and environmental fields. In this paper,

-Galactosidase was covalently immobilized on the surface of P

(AN-co-MMA) nanospheres. P (AN-co-MMA) nanospheres were modified through introducing terminal amine groups via aminoalkylation process with ethylene diamine. Different factors affecting the aminoalkylation process were investigated and its impact on the activity and the retention of immobilized enzyme activity was monitored. The P (AN-co-MMA) nanospheres were characterized by scanning electron microscope (SEM), Thermal Characterization (TGA), FT-IR Spectroscopic Analysis and Particle size Analysis, the maximum immobilization capacity was 1250 activity units and retained about 96% of its initial activity.


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TUE : 23-03-2010

HALL[POSTER]


NANO - 13

EG

PROF. AHMED RADWAN

03:20

:

04:00

[email protected]

PERFORMANCE MEASUREMENT OF SOME AD HOC NETWORK ROUTING PROTOCOLS

ABSTRACT A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer to peer routing instead of static network infrastructure to provide network connectivity. A user can move anytime in an ad hoc scenario and, as a result, such a network needs to have routing protocols which can adopt dynamically changing topology. To accomplish this, a number of ad hoc routing protocols have been proposed and implemented such as, Ad hoc On-Demand Distance Vector routing (AODV), Fisheye State Routing (FSR) and Location-Aided Routing (LAR). This paper compares the major characteristics of these protocols such as, routing messages overhead, throughput and end to end delay using a parallel discrete event-driven simulator, GloMoSim. The experimental results show that FSR protocol has low control overhead compared with AODV and LAR. Regarding the throughput, AODV has a high throughput compared with the other considered protocols. Considering the end to end delay, LAR protocol shows better performance over FSR and AODV protocols.

Pure and Applied Mathematics


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Mathematics 31 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 1 )

MATH - 21

EG

PROF. S.A. ELZAHABY


OPTIMAL CONTROL PROBLEM GOVERNED BY ELLIPTIC VARIATIONAL INEQUALITIES FOR INFINITE ORDER S.A. El-Zahaby , Ibtissam M. Zoulati

ABSTRACT


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Mathematics 32 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 2 )

MATH - 15

EG

DR. SALAH KHAFAGY

09:15

:

09:30

[email protected]

MAXIMUM PRINCIPLE AND EXISTENCE OF WEAK SOLUTIONS FOR AN N X N NONLINEAR SYSTEM INVOLVING DIFFERENT DEGENERATED P-LAPLACIAN OPERATORS ON R^N H. M. Serag , S.A. Khafagy Prof. of Pure Math. Mathematics Department, Faculty of Science, Al-Azhar University, Cairo, Egypt Lecturer of Pure Math, Mathematics Department, Faculty of Science, Al-Azhar University, Cairo, Egypt

ABSTRACT In this paper, we study the maximum principle and existence of weak solutions for an n x n nonlinear system involving different degenerated p-Laplacian operators on R^N. We give sufficient conditions to have a maximum principle for this system and then we prove the existence of weak solutions for the same system by using an approximation method.


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Mathematics 33 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 3 )

MATH - 2

EG

PROF. KHALED MEKHEIMER

09:30

:

09:45

[email protected]

LIE GROUP ANALYSIS AND SIMILARITY SOLUTIONS FOR A COUPLE STRESS FLUID WITH HEAT TRANSFER Kh. S. Mekheimer , S. Z.-A. Husseny , A. T. Ali , R. E. Abo-Elkhair Mathematics Department, Faculty of Science, Al-Azhar University,Nasr City, 11448, Cairo, Egypt Mathematical Department, Faculty of Science, King AbdulAziz University, Jeddah, KSA Mathematics Department, Faculty of Science, Al-Azhar University, Mathematics Department, Faculty of Science, Al-Azhar University,

ABSTRACT The equations of two dimensional incompressible steady couple stress fluid flow with the heat transfer have been studied. Lie group analysis has been employed and the group invariant solutions corresponding to translational and rotational symmetry are developed. A boundary value problem for the translational symmetry is investigated and the results are also sketched graphically. The effect of the couple stress material constant have been noticed.


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Mathematics 34 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 4 )

MATH - 4

EG

DR. AHMED ELAIW

09:45

:

10:00

[email protected]

STABILITY AND STABILIZATION OF HIV MODEL WITH CTL IMMUNE RESPONSE A. M. Elaiw , A. M. Shehata Faculty of Science, Al-Azhar University (Assiut Branch) Assiut, Egypt Faculty of Science, Al-Azhar University (Assiut Branch) Assiut, Egypt

ABSTRACT In this paper, we study the stability and stabilization of human immunodeficiency virus (HIV) model. The model is a 6-dimensional nonlinear ODEs that describes the interaction of the HIV with two target cells, CD4+ T cells and macrophages and takes into account the Cytotoxic T Lymphocytes (CTL) immune response. Lyapunov functions are constructed to establish the global asymptotic stability of the steady states of the model. In a control system framework, the HIV model incorporating the effect of Highly Active AntiRetroviral Therapy (HAART) is considered as a nonlinear control system with drug dose as control input. We developed treatment schedules for HIV infected patients by using Model Predictive Control (MPC)-based method. Stabilization of the uninfected steady state of the HIV model by MPC is established. The robustness of the MPC against small model uncertainties or disturbances is also shown.


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Mathematics 35 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 5 )

MATH - 5

LY

DR. ABDALSALAM ALDAIKH


LINEAR DIFFERENTIAL EQUATIONS OF THE SECOND ORDER WITH VARIABLE COEFFICIENTS "OPERATIONAL FACTORING METHOD" Fouad Zein Elarab , Abdassalam B. Aldaikh Department of Mathematics , Omar Al-Mukhtar University OMAR AL-MUKHTAR UN. LIBYA

ABSTRACT There is no generally applicable method of solving differential equations with coefficients that are functions of the independent variable x. Nevertheless, there are certain cases in which a solution is possible. Different methods have been proposed in literatures. The method, proposed here is based on factorization of operator. It is not easy because the factors here contain the independent variable x, they are not commutative and not unique extra care is needed . By the aid of solving Riccati's equation, the problem is then reduced to that of solving two linear equations of order one.


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Mathematics 36 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC05 ( 6 )

MATH - 6

LY



APPLICATIONS OF BILINEAR TRANSFORMATION Abdassalam B. Aldaikh , Fouad Zein Elarab Department of Mathematics , Omar Al-Mukhtar University OMAR AL-MUKHTAR UN. LIBYA

ABSTRACT A conformal map is a change of variables from plane to plane that simplifies the given twodimensional potential problem by simplifying the domain, while preserving the governing Laplace differential equation. Besides simplifying the domain while preserving the Laplace equation, such maps are conformal in the sense that they preserve angles, both in magnitude and sense. Thus, our program consists mainly of studying the bilinear map (transformation) which has the useful property of sending circles, it is the only map that is one-to-one. In this paper we considered only the simplest boundary conditions (constant boundary conditions of Dirichlet type), and we illustrate with representative examples using bilinear transformation.


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Mathematics 37 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 1 )

MATH - 14

EG

PROF. ABDEL-SHAFY OBADA

10:30

:

10:45

[email protected]

DYNAMICS OF THREE-ATOMS TAVIS-CUMMINGS MODEL: COOPERATIVE CASE M . Youssef , N. Metwally , A. -S. F. Obada Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt. Department of Mathematics, Faculty of Science, South Valley University, Aswan, Egypt. Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt.

ABSTRACT In this paper we consider a system of identical three two-level atoms interacting at resonance with a single-mode of the quantized field in a lossless cavity. The initial cavity field is prepared in the coherent state while the atoms are taken initially to be either in the uppermost excited state "eee" or The GHZ-state or the "W" state. For this system we investigate the collapses and revivals in the atomic inversion where superharmonic effects appear, is discussed. Most remarkably it is found that the GHZ-state is more robust against energy losses, showing almost coherent trapping.


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Mathematics 38 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 2 )

MATH - 9

EG

MR. AHMED ADLY

10:45

:

11:00

[email protected]

HORN MATRIX FUNCTION AND HADAMARD PRODUCT OF TWO HORN’S MATRIX FUNCTIONS OF TWO COMPLEX VARIABLES K. A. M. Sayyed , M. S. Metwally , A. A. Mahmoud Department of Mathematics, Faculty of Science, Assiut University Department of Mathematics, Faculty of Science, Assiut University Department of Mathematics, Faculty of Science, Al-Azhar University

ABSTRACT In this paper, the Horn’s matrix function of two complex variables H2(A,B,B0;C;z,w) is studied. The convergent properties, an integral representation and a contiguous function relations for it are investigated. Operating on Horn’s matrix functions with the differential operator D^(N) is studied. The Hadamard product of two Horn’s matrix functions is studied, certain results as, the domain of regularity, a contiguous function relations and operating with the differential operator D and D^2 are established.


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Mathematics 39 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 3 )

MATH - 11

EG

MR. ALI ABU-BAKR

11:00

:

11:15

[email protected]

A RATE GROWTH OF VAPOUR BUBBLE BETWEEN TWO-PHASE TURBULENT FLOW Selim ali Mohammadein , Ali Abu-bakr Applied Math. Department, Faculty of science, Tanta University, Tanta Egypt, Math. Department, Faculty of science, Menoufiya University, Shebin El-Kom Egypt

ABSTRACT In this paper, the growth of vapour bubble in superheated water is studied for two-phase turbulent flow. The mixture surrounded a growing vapour bubble is a non viscous superheated with turbulent flow. The growth problem is formulated by mass and momentum equations under physical assumptions between two finite boundaries. Thermal diffusivity, superheating and Péclet number are a dominant parameters for bubble growth. The scale of bubble is larger than the scale of turbulence in the mixture surrounded growing bubble is considered. The previous models of growth for laminar flow are obtained as a special cases of present model for some values of parameters a, b, and n respectively.


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Mathematics 40 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 4 )

MATH - 12

EG

PROF. AHMED ZABEL

11:15

:

11:30

[email protected]

PSEUDO DIFFERENTIAL OPERATORS WITH INFINITE NUMBER OF VARIABLES GENERATING FELLER SEMIGROUPS A. M. Zabel , Maryam A. Alghamdi Dept. Mathematics, Faculty of Science, Al-Azhar Univ., Nasr City, Cairo, Egypt. Dept. Mathematics, Faculty of science for Girls, King Abdul-Aziz Univ., Jeddah, Saudi Arabia.

ABSTRACT In the infinite tensor product of Hilbert spaces, we define pseudo differential operators with symbol in terms of negative definite functions. The main result is to show that under suitable conditions closed extensions of these operators form generators of Feller semigroups. Our construction uses the Yosida-Hille-Ray theorem and some estimates in anisotropic Sobolev spaces of functions with infinite number of variables.


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Mathematics 41 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 5 )

MATH - 13

EG

MR. MAMDOUH OMRAN

11:30

:

11:45

[email protected]

A NEW TREATMENT OF THE BUBBLE GROWTH AND RELAXATION TIMES BETWEEN TWO -PHASE FLOW Selim Mohammadein , Mamdouh Omran Math. Department, Faculty of Science, Tanta University, Tanta, Egypt Math. Department, Faculty of Science, Tanta University, Tanta, Egypt

ABSTRACT The growth of vapour bubble between two-phase flow is formulated by a new assumption, which different than that studied before. The pressure and temperature fields are obtained analytically in terms of bubble radius. The pressure and thermal relaxation times between nonequilibrium systems of bubbly flow are derived in terms of void fraction. The obtained results of relaxation times performed a good agreement with MOBY DICK experiment.


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Mathematics 42 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 6 )

MATH - 8

EG

MR. MOHAMED BARAKAT

11:45 :

12:00

[email protected]

A FIXED POINT THEOREM FOR UNIFORMLY GENERALIZED LIPSCHITZIAN MAPPINGS WITH UNIFORM NORMAL STRUCTURE ON METRIC SPACES R. A. Rashwan , Ahmed H. Soliman , Mohamed A. Barakat Department of Mathematics, Faculty of Science, Assiut University, Assiut Egypt Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut, Egypt bDepartment of Mathematics, Faculty of Science, Al-Azhar University, Assiut, Egypt

ABSTRACT In this work, we define a new generalized uniformly Lipschitzian type conditions for a family of selfmappings which are asymptotically regular in a complete bounded metric space. some examples are presented to show the difference between our condition, the condition of generalized uniformly Lipschitzian mappings which introduced by Ahmed H. Soliman in [9] (Ahmed H. Soliman, A Fixed point theorem for semigroups on metric spaces with uniform normal structure, Scientiae Mathematicae Japonicae (2009), 93-98.) and Lipschitz condition, a fixed point theorem for this mappings are presented which extend the fixed point theorem due to [6](T.-C. Lim & H.-K. Xu, Uniformly ipschitzian mappings in metric spaces with uniform normal structure, Nonlinear Analysis, Theory Methods & Aplications. Vol. 25. No. 11 (1995), 1231-1235.).


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Mathematics 43 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC10 ( 7 )

MATH - 23

LY



DETERMINISTIC AND STOCHASTIC MODELS IN BIOLOGY " A COMPARISON STUDY" Abdassalam B. Aldaikh Department of Mathematics, Faculty of Science , Omar Al-Mukhtar University Al-Baida, Libya

ABSTRACT Both deterministic and stochastic models have important roles to play and should therefore be considered together. Numerous deterministic models from biology for single and two interacting species are presented, such as: Exponential Growth Model, Logistic Growth Model, Competition Model, Predator-Prey Model and Harvesting Problem. For these models, the behavior of deterministic model is discussed, and then developed to the corresponding stochastic model, to show the importance of considering stochastic models, by introducing a stochastic analogue to each one of the previous deterministic models. The explicit solutions of some few models are presented. For the majority, however, it is impossible to get such solutions. Itô SDEs for Interacting Populations offer much help to solve many population models numerically. Although full conditions for agreement between deterministic and expected stochastic solutions are at present unknown, it could be, however, compared them. A comparison between the deterministic & stochastic models is given to show their features which made clear by graphs generated through MATHEMATICA-4.1 and MATLAB-6.2. software.


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Mathematics 44 286

TUE : 23-03-2010

HALL[POSTER]


03:20 : 04:00

MATH - 1

EG

DR. HODA SAYED AHMED

[email protected]

ON NEURAL NETWORK METHODS FOR MIXEDBOUNDARY VALUE PROBLEMS S.A .Hoda Ibrahim Faculty of Science, University of Zagazig, Egypt

ABSTRACT In this paper a numerical solution for solving partial differential equations(PDEs),with mixed boundary conditions,is described.This articledeals the irregular boundaries where the boundary is

determined

by

anumber

of

points

that

belong

to

it.We

employed

a

multilayer

perceptronartificial neural network and a radial basis function network to accountfor the exact satisfaction of the boundary conditions. Also in this article,we illustrate the method by solving a variety of problems on two andthree-dimensional PDEs that has yielded accurate solutions.


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Mathematics 45 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 3

EG

MR. SAED RAMADAN


INTEGRAL REPRESENTATION OF BASIC POSITIVE AND NEGATIVE DEFINITE FUNCTIONS. A. S. Okb El Bab , H. A. Ghany , S. Ramadan Prof. and Chairman of Department of Mathematics, Faculty of Science, Azhar University, Cairo, Egypt. Department of Mathematics, Faculty of Industrial Education, Helwan University, Cairo, Egypt. Department of Mathematics, Faculty of Science, Azhar University, Cairo, Egypt

ABSTRACT We denote a q-analogue of the so called positive definite functions and also for functions that belongs to the class of completely monotonic functions, then we give some properties of these two classes . Finally, we give the integral representation of these analogue functions and explain our results by some examples.


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Mathematics 46 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 7

EG

MR. MOHAMED BARAKAT


COMMON FIXED POINT THEOREMS FOR MULTI-VALUED MAPPINGS IN SOME NEW GENERALIZED COMPLETE METRIC SPACES AND ITS APPLICATIONS Ahmed H. Soliman , Mohamed A. Barakat Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut, Egypt Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut, Egypt

ABSTRACT In this paper, some new generalized complete metric space are defined. Some common fixed point results in these types of completeness and for multi-valued mappings are presented. Also, we apply the obtained results to fuzzy multi-valued mappings.


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Mathematics 47 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 10

EG

MR. AHMED ADLY


INEQUALITIES OF BESSEL FUNCTIONS OF TWO INDEX OF TWO COMPLEX VARIABLES K. A. M. Sayyed , M. S. Metwally , A. A. Mahmoud Department of Mathematics, Faculty of Science, Assiut University Department of Mathematics, Faculty of Science, Assiut University Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut

ABSTRACT Inequalities of Bessel functions of two index of two complex variables, modified Bessel functions of two index of two complex variables, Tricomi functions of two index of two complex variables and of their ratios are obtained.


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Mathematics 48 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 16

EG

DR. AHMED SOLIMAN


ASYMPTOTIC STABILITY OF NONLINEAR GENERALIZED CONTRACTION SEMIGROUPS Afaf A. Saleh, , Ahmed. H. Soliman , Doaa. R. Abd-Elwahad Department of Mathematics, Faculty of Science for Girls, Al-Azhar University, Egypt Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt Department of Mathematics, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt

ABSTRACT In this paper, we prove asymptotic stability theorem for a new concept of nonlinear generalized contraction semigroups (in short GC0 Semigroups) on Banach spaces. Also, we generalized Crandall-Ligget Theorem for GC0 Semigroups. Our results are generalizations of certain results due to Crandall-Liggett and I. Aksikas, J. Winkin, D. Dochain [ Asymptotic Stability of Infinite-Dimensional semilinear systems: Application to a nonisothermal reactor, System and Control Letters, 2008].


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Mathematics 49 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 17

LY

PROF. AMANI ABODI


ABSTRACT , .

. .


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Mathematics 50 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 18

EG

DR. OMAR EL-LEITHY

03:20 :

04:00

[email protected]

PERSISTENCE IN MODEL OF FOUR INTERACTING PREY – PREDATOR POPULATION Dr Omar El-Leithy , S.M.Elleh Department of mathematics, Faculty of Science, Al-Azhar University, Assiut

ABSTRACT This paper considers a class of deterministic model of four interacting populations with a view towards determining when all of the populations persist. The class of system considered allows four level food webs, two competing predators feeding on two prey or a single predator feeding on three competing prey populations.


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Mathematics 51 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 19

LY

PROF. MOUNIRA SAKI


GLUING OF DIFFERENTIAL SPACES AND APPLICATION

ABSTRACT , .

. .

.


.. .:: ::. ..


Mathematics 52 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 20

EG

PROF. TAHA SOLTAN


SOME OPERATIONAL FORMULAS CONNECTED WITH A FUNCTION DEFINED BY A GENERALIZED RODRIGUS T.I.Sultan Al-Azhar University

ABSTRACT


.. .:: ::. ..


Mathematics 53 286

TUE : 23-03-2010

HALL[POSTER]


MATH - 22

EG

DR. FATMA ABD ENABY

E ECT OF HEAT TRANSFER ON A CARREAU

03:20

:

04:00

[email protected]

UID IN A VERTICAL CHANNEL

WITH PERISTALSIS Kh.S. Mekheimer , Y. Abd Elmaboud , F.M. Abd Elnaby

ABSTRACT We investigated the e ect of heat transfer on the peristaltic

ow of a carreau

uid in a vertical

channel under the assumptions of long wavelength and low Reynolds number. Long wavelength approximation is used to linearize the governing equations. The system of the governing nonlinear PDE is solved by using the perturbation method. The solution are obtained for the velocity and the temperature rise,

elds. Numerical calculations are carried out for the pressure

ctional forces and the features of the

by plotting graphs and discussed in detail.

ow and temperature characteristics are analyzed

Statistics


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Statistics 54 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 1 )

STAT - 1

EG

ASSOC.PROF. MOHAMED MOSHREF


MOMENTS OF ORDER STATISTICS FROM WEIBULL DISTRIBUTION IN THE PRESENCE OF OUTLIERS M. E. Moshref Faculity of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

ABSTRACT In this paper, we derive the exact expressions for the single and product moments of order statistics from Weibull distribution under contamination model. We assume that X1, X2,…,Xn-p are independent with probability density function f(x) while the remaining, p observations (outliers) Xn-p,…,Xn are independent ( and independent of X1, X2,…,Xn-p) with probability density function arises from some modified version of f(x), which call g(x), in which the location and/ or scale parameters have been shifted in value. Finally, some numerical calculations are given to illustrate the theoretical results,


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Statistics 55 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 2 )

STAT - 2

EG

DR. NASHWA YHIEA

01:15

:

01:30

[email protected]

INFERENCE FOR THE GENERALIZED PARETO DISTRIBUTION BASED ON PROGRESSIVELY TYPE-II CENSORED DATA M. A. W. Mahmoud , Nashwa Mohamed El-sayed Yhiea (N. M. Yhiea) Department of Mathematics, Faculty of Science, Al-Azhar University Naser City, Cairo 11884, Egypt Department of Mathematics, Faculty of Science Suez Canal University. Ismailia.

ABSTRACT The moments of progressively Type-II censored sample from the generalized Pareto distribution are derived and used to obtain estimation result for the location and scale parameters. The Best Linear Unbiased estimates (BLUE's) and the maximum likelihood estimates (MLE's) methods are derived. Finally, simulation study is given to compare between these estimates.


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Statistics 56 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 3 )

STAT - 3

EG

MR. MOANIS MOAZ

01:30

:

01:45

[email protected]

ON RELIABILITY OF A TWO-UNIT COLD STANDBY REDUNDANT SYSTEM SUBJECT TO WEATHER EFFECT AND PARTIAL FAILURE. M.A.W. Mahmoud , M. Moshref , M. A.T. MOAZ Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, EGYPT. Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, EGYPT. Physical and Mathematical Engineering Dep.,Faculty of Engineering, Suez Canal University,Port Said City, EGYPT.

ABSTRACT We estimate various measurers of reliability for two-unit standby system subject to weather effect and partial failure distribution are obtained based on the regenerative point technique. Two type of failure are assumed. Finally, a numerical example is presented to illustrate the theoretical results.


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Statistics 57 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 4 )

STAT - 4

EG

ASSOC.PROF. AHMED ABD ELLAH


EXACT TWO SAMPLE BAYESIAN PREDICTION BOUNDS FOR THE EXPONENTIAL DISTRIBUTION WITH RANDOM SAMPLE SIZE Ahmed Hamed Abd Ellah Sohag University, Faculty Of Science, Mathematics Department, Sohag, 82524

ABSTRACT This paper is concerned with the Bayesian prediction limits problem of the s-th order statistics when the size of the future sample is a random variable.The one parameter exponential distribution with constant failure rate is considered. Using the gamma prior,the paper derives the posterior distribution for that failure rate and hence the predictive distribution of future observations. Available data are from type II censored sampling.The analysis depends mainly on assuming that the future sample size m is a random variable having Poisson or binomial distribution.Simulation study and numerical examples are used to illustrate the procedure.


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Statistics 58 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 5 )

STAT - 5

EG

DR. MONTASER AMEIN

02:00

:

02:15

[email protected]

ORDER STATISTICS AND CHARECTERIZATION FROM INDEPENDENT AND IDENTICAL EXPONENTIAL (BERNOULLI) MIXTURE DISTRIBUTION AND INFERENCE M. M. Mohie El-Din , M. M. Amein Faculty of Science , Al-Azhar University,Cairo, Egypt . Faculty of Science , Al-Azhar University, Cairo, Egypt .

ABSTRACT The main aim in this article is deriving recurrence relations between moments of order statistics for doubly-truncated exponential (Bernoulli) mixture distribution. The recurrence relation of order statistics for exponential (Bernoulli) mixture distribution are obtained as special cases. The characterizations for doubly-truncated exponential (Bernoulli) mixture distribution are also established .


.. .:: ::. ..


Statistics 59 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 6 )

STAT - 7

EG

DR. BHADY KAMEL

02:15

:

02:30

[email protected]

AN EXTENDED BURR (XII) DISTRIBUTION AND ITS APPLECATION TO CENSORED DATA M. Gharib , M. M. Mohie El-Din , B. E. Mohammed Department of Mathematics, Faculty of Science, Ain Shams University. Cairo, Egypt. Department of Mathematics, Faculty of Science, Al-Azhar University. Nasr City 11884, Cairo, Egypt Department of Mathematics, Faculty of Science, Al-Azhar University. Nasr City 11884, Cairo, Egypt

ABSTRACT This paper investigates properties of a new parametric distribution generated by using Marshall -Olkin (1997) extended family of distribution based on Burr (XII) model. It is shown that the proposed distribution can be obtained as a compound distribution with mixing exponential distribution. Simple sufficient conditions for the shape behavior of the density and hazard rate function for the new distribution are given. Finally, utilizing maximum likelihood estimation the extended distribution is fitted to a set of randomly censored data and its goodness of fit is demonstrated.


.. .:: ::. ..


Statistics 60 286

TUE : 23-03-2010

HALL[E]

ORAL - SEC15 ( 7 )

STAT - 8

EG

DR. MOHAMMED KOTB

02:30

:

02:45

[email protected]

CHARACTERIZATIONS OF THE GENERALIZED PARETO DISTRIBUTION BASED ON K-TH RECORD VALUES M. M. Mohie El-Din , Y. Abdel-Aty , M. S. Kotb Department of Mathematics, Faculty of Science, Al-Azhar University. Department of Mathematics, Faculty of Science, Al-Azhar University. Department of Mathematics, Faculty of Science, Al-Azhar University.

ABSTRACT In this paper, we obtain the exact explicit expressions for the single, double, triple and quadruple of k-th upper record values from a generalized Pareto distribution (GPD). We establish some recurrence relations between single, double, triple and quadruple moments of k-th upper record values from the GPD. Using a recurrence relation for single moments we obtain a characterization of GPD, also a characterization by considering the conditional expectation for GPD is obtain.


.. .:: ::. ..


Statistics 61 286

TUE : 23-03-2010

HALL[POSTER]


STAT - 6

EG

DR. FATHY HAMDY

03:20

:

04:00

[email protected]

ESTIMATIONS OF THE PARAMETERS OF THE INVERSE WEIBULL DISTRIBUTION WITH PROGRESSIVELY CENSORED DATA M.M. Mohie El-Din , Y. Abdel-Aty , Fathy H. Riad Faculty of Science, Al-Azhar University, Egypt. Faculty of Science, Al-Azhar University, Egypt. Faculty of Science, Minia University, Egypt.

ABSTRACT In this paper, we obtained estimation results concerning a progressively type II censored sample from a two parameters Inverse Weibull. The maximum likelihood method is used to derive the point estimators of the parameters. An exact Confidence interval and an exact joint Confidence region for the parameters are constructed. A numerical example is presented to illustrate the methods proposed here.

Computer Science


.. .:: ::. ..


Computer Science 62 286

TUE : 23-03-2010

HALL[POSTER]


CSC - 5

EG

MS. NIVEEN SAMY


NEW GREEDY ALGORITHM FOR MINIMUM MEMBERSHIP SET COVER PROBLEM Niveen Samy , Sameh Sami Daoud , Fayed F.Ghalib Ain Shams university-Cairo-Egypt Ain Shams university-Cairo-Egypt Ain Shams university-Cairo-Egypt

ABSTRACT Minimum membership set cover (MMSC) problem is an NP-problem and is very important in many applications. Until recently there was no algorithm that solves it approximately except relaxation to Linear programming problem. Relaxation to Linear programming algorithm is a probabilistic algorithm. In this paper we introduce a Greedy algorithm that gives a feasible solution and prove that its approximation ratio is O(ln n).


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


03:20 : 04:00

CSC - 8

EG

DR. EMAD ATYA

[email protected]

CRYPTOGRAPHIC KEY GENERATION BASED ON SPEECH SIGNAL Emad Masamer Faculty of Science, Al-Azhar University

ABSTRACT In this paper, we propose to use speech signal for generating sequences of random bits. The key bits are built using the Automatic Speech Recognition Technology to detect the speech utterance.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


CSC - 10

EG

MS. ENAS ELSHA3RAWY

03:20

:

04:00

[email protected]

MEASUREMENTS OF SOFTWARE QUALITY METRICS Gaber Elsha3rawy , Nahed ElDesoki , Enas Elsha3rawy Computer Science Department of Al-Azhar University Computer Science Department of Al-Azhar University Computer Science Department of Al-Azhar University

ABSTRACT In Our search we will define the depth meaning & definition of software quality " The Ultimate Goal of Software Engineering" that indicates software quality importance according to the world :" People have been killed by defective software". The whole world take SQ in its Consideration Every one asked for it so we also browsing the studying of Sq in a broad as Software Quality Management Syllabus Robinson college of Business Georgia state University Second explain different overview in SQ."Quality Management Philosophies" Third , We use the ISO 9126 model to measure the reliability of code by using RSM Program that is famous tool in many countries that measure SQ of Code "Resource Standard Metrics is a source code metrics and quality analysis tool for ANSI C, ANSI C++, C# and Java for use on all Windows and UNIX operat-ing systems". Finally we try to improve our software by easy way instead of calculation of complex mathematics operation .


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


CSC - 11

EG

PROF. AHMED RADWAN

03:20

:

04:00

[email protected]

PERFORMANCE MEASUREMENT OF SOME AD HOC NETWORK ROUTING PROTOCOLS Ahmed. A. A. Radwan , Tark . Mostfa. Mahmoud , Esam Halim Houssein The Dean of Faculty of computer science Nahda yuniversity Baney Swaif Associate professor at aculty of computer science ,Faculty of Science ,Minia University,Egypt

ABSTRACT A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer to peer routing instead of static network infrastructure to provide network connectivity. A user can move anytime in an ad hoc scenario and, as a result, such a network needs to have routing protocols which can adopt dynamically changing topology. To accomplish this, a number of ad hoc routing protocols have been proposed and implemented such as, Ad hoc On-Demand Distance Vector routing (AODV), Fisheye State Routing (FSR) and Location-Aided Routing (LAR). This paper compares the major characteristics of these protocols such as, routing messages overhead, throughput and end to end delay using a parallel discrete event-driven simulator, GloMoSim. The experimental results show that FSR protocol has low control overhead compared with AODV and LAR. Regarding the throughput, AODV has a high throughput compared with the other considered protocols. Considering the end to end delay, LAR protocol shows better performance over FSR and AODV protocols.


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WED : 24-03-2010

HALL[E]

ORAL - SEC20 ( 1 )

CSC - 9

EG

MR. AMR ABOZEID

09:00

:

09:15

[email protected]

MOBILE INTERACTIVE CLASSROOM SYSTEM Amr Abd El-Wahed M. Abozeid , Mohamed A. Azize A. Razek , Hosam Farouk Elsofany , Fayed F. M. Ghaleb Al-Azhar University, Cairo Abdulaziz University, Saudi Arabia Qatar University, Qatar Ain Shams University, Cairo

ABSTRACT Nowadays become possible to learn at any time and any place. This is advantage results mainly from the electronic and mobile learning systems. The style of communications and interactions offered by classical classroom or face-to-face learning is still the most common style way of learning. Unfortunately, the increasing number of students and the constraints of time and place lead to a lack of interactions and communications in the classroom. In this paper we introduce a system based on Bluetooth technology to build an interactive learning environment in classroom. The proposed system:” Mobile Interactive Classroom System (MICSystem)” improves the learning processes in the classroom and activates the interaction between instructors and students. The system helps instructor to make quick quizzes and voting, allow students to ask questions and write suggestions.


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WED : 24-03-2010

HALL[E]

ORAL - SEC20 ( 2 )

CSC - 3

EG

MR. MAZHAR HEFNAWI

09:15

:

09:30

[email protected]

NEW ENVIRONMENTAL PREDICATION MODEL USING FUZZY LOGIC AND NEURAL NETWORKS Abu Baker Ramadan , Fathee Zakee , Ahmed EL-Badwee , Ahmed EL-GARHY , Mazhar Hefnawi National Center for Nuclear Safety and Radiation Control, Egyptian Atomic Energy Authority Cairo, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT National Center for Nuclear Safety and Radiation Control, Egyptian Atomic Energy Authority Cairo, EGYPT National Center for Nuclear Safety and Radiation Control, Egyptian Atomic Energy Authority Cairo, EGYPT

ABSTRACT This paper introduces a new predication model. This predication model is designed to accomplish its task by only one type of measurements while other predication models need at least three types of measurements. This feature makes this model less expensive than other models. The user who works with other models such as Statistical model, Chemical model, Physical model and neural network model needs more than two types of measurements. On the other hand, the user who uses this model can use only one type of data to operate his or her model. In this case, the user saves a lot of time and money. This feature also saves a lot of effort required to link different types of data with each other by a certain relationship between them.. In this paper, this model is implemented on predication of Gamma radiation levels measurements in ambient air. The results from this model are good enough to depend on it for predication, recognizing the artificial or strange phenomena, covering lost or missing data and making a temporally monitoring system. This model can be used in any continues environmental monitoring system, and environmental decision maker.


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WED : 24-03-2010

HALL[E]

ORAL - SEC20 ( 3 )

CSC - 4

EG

MR. MAZHAR HEFNAWI

09:30

:

09:45

[email protected]

DESIGN OF DIGITAL RADIATION IMAGE BY FUZZY LOGIC Abu Baker Ramadan , Fathee Zakee , Ahmed EL-Badwee , Ahmed EL-GARHY , Mazhar Hefnawi . National Center for Nuclear Safety and Radiation Control, Egyptian Atomic Energy Authority Cairo, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT Helwan Unvirsity,Collage of Engineering Helawn, EGYPT National Center for Nuclear Safety and Radiation Control, Egyptian Atomic Energy Authority Cairo, EGYPT

ABSTRACT This work introduces a new way of the data visualization. This new kind of data visualization is called "Digital Measurements Image" or" Digital 'Application name' Image". It is known that the normal digital image is created by digital camera or digital scanner but digital measurements image is created by measurements of monitoring data. This work uses the data which is measured by some radiation monitoring stations and classifies it using a fuzzy logic classification technique to create some digital measurements images or digital radiation images. The main unique advantage of digital measurements image is that it expresses thousands of measurements in a very clear form through only one photo while the maximum number of measurements does not exceed 100 for other conventional data visualization methods. This feature gives a facility to view all measurements which are taken in one year in only one photo. This photo helps the user to observe the behavior of thousands of measurements in few minutes instead of spending few hours in reviewing hundreds of charts for the same measurements.


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WED : 24-03-2010

HALL[E]

ORAL - SEC20 ( 4 )

CSC - 7

EG

DR. EMAN ELSAYED

09:45

:

10:00

[email protected]

AMELIORATE THE ELECTRONIC COURSE BY USING VAK-TEST, GRAPHOLOGY AND CARTOON MOVIES Eman Karam Elsayed Faculty of science (girls) - Alazhar University

ABSTRACT The growing acceptance of online learning has made it possible for anyone to become an instructor , without even being affiliated with an educational organization or even being educational. In spite of the existence of standards to design e-learning systems, but still we need specialized educators to administrate the e-course. So this paper propose ameliorate ecourse standards from two sides. From students' side, by using the educational rules in the course presentations. And from teacher side by design graphology web expert system and adding VAK –test to give the teacher clear view, and uploading e-course on web edu-portal for easy LMS learning management system. The proposed methodology is applied to the computer maintenance e-course for children.


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WED : 24-03-2010

HALL[E]

ORAL - SEC20 ( 5 )

CSC - 6

EG

MR. OSAMA GHONEIM

10:00

:

10:15

[email protected]

A NEW CROSSOVER OPERATOR FOR TREATING TRANSPORTATION PROBLEMS Soheir M . Khamis , Fayed F .Ghaleb , Osama A .Ghoneim Division of Computer Science, Department of Math, Faculty of Science, Ain Shams University, Cairo, Egypt Division of Computer Science, Department of Math, Faculty of Science, Ain Shams University, Cairo, Egypt Demonstrator,Department of Math, Faculty of Science, Tanta University, Tanta, Egypt

ABSTRACT This paper introduces a genetic algorithm for solving transportation problems. A simple form of the problem is a discussion of a single commodity transported from a set of sources to a set of destinations. The transportation cost from a particular source to a particular destination is not fixed, since it depends on the transported units from a source to a destination. To solve this problem using genetic algorithm, authors give a new crossover operator matching matrix representation which is models the problem. The given crossover has an important advantage; producing valid offspring which don't need any repairs. According to this advantage, the execution time of the modified genetic algorithm is very fast. Combing the given crossover with a specified relevant mutation of matrix representation (MMR),[5],[8], leads to finding best solutions to the underlying problem. Furthermore, the results of the modified genetic algorithm affect with the changing values of the probability of mutation pmute. So, the study includes the relation between the optimal solutions and generations with respect to various values of pmute for some examples.

Physics


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Physics and its applications 71 286

TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 2 )

PHY - 62

EG

MS. ASMAA MAHMOUD AWADALLAH

01:30

:

01:45

[email protected]

EFFECT OF ANNEALING ON THE ELECTRICAL AND OPTICAL PROPERTIES OF CU5GA33TE 62 THIN FILM D.Goneim , S.Nasser , N.A.Mohsen , A.Awad

ABSTRACT Thin film of Cu5Ga33Te62 system has been prepared by using thermal evaporation technique with 45 nm thickness. The electrical conductivity assessment has been carried out on this film in the temperature range of 300- 425 K. The film has been annealed at 323, 348, 373, 398, 423 and 453 K under vacuum for 3hr . The temperature dependence of the electrical conductivity for all annealing temperatures has been recorded and discussed .The results were analyzed in order to establish the activation energy of each state. With the increase in the annealing temperature the film under phase transition to the crystalline state .The optical properties of Cu5Ga33Te62 system have been studied as a function of annealing temperature. The results showed that the optical transitions in the wave length range (200- 1100) nm are direct transitions where the values of Eg are decreased with increasing annealing temperature , i.e., the absorption edge shift toward a higher wavelength or a lower energy . The optical constants k, n, r and o of the film at different temperatures are influenced by the heat treatment.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 3 )

PHY - 1

EG

PROF. SALAH AWADALLA

01:45

:

02:00

[email protected]

SOIL VISCOSITY AS A NEW PHYSICO-CHEMICAL APPROACH FOR MEASURING THE IMPROVEMENT IN CALCREOUS SOIL TREATED WITH COMPOST Salah.Y. Awadalla , Faten A.F. Nour El-Dien , Gehad. G Mohamed , Amal A. Ahmed Professor of soil physics, Desert Research Center (DRC) Professor of Analytical chemistry and director of Micro analytical Center, Faculty of Science, Cairo University Professor of Inorganic Chemistry, Chemistry Department, Faculty of Science, Cairo University Researcher in Physics and Chemistry Department DRC

ABSTRACT Soil viscosity has been provided as a new parameter for measuring the improvement of calcareous soils those treated with several samples of plant residues compost. The aim of this paper is to study the soil viscosity and its relations with some soil properties as affected by twenty four compost samples prepared from rice and corn wastes, by two different composting methods with some additional treatments through composting process were used in ameliorating Maryut calcareous soil. The data indicate good response of treated soils, referring to viscosity values, due to either kind or amount of compost samples. Furthermore, the degree of effectiveness correlated significantly with many of compost characters either as structure like molecular weight (M.wt), thermal index (RI) and degree of humification (RF) or as physicochemical properties like heat capacity (Cp), water holding capacity (WHC), moisture content, organic matter content (OM%) and cation exchange capacity (CEC). Soil viscosity have significant negative correlations with CP, WHC and EC , while it have significant positive correlation with bulk density. Finally, we provide this new aspect to be considered to the classic soil measurements which it may need more investigations to verify its relations with other soil types.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 4 )

PHY - 2

EG

PROF. SALAH AWADALLA

02:00

:

02:15

[email protected]

ENVIRONMENTAL DIMENSIONS IN DEVELOPING NEWLY RECLAIMED DESERT LANDS Prof. Dr. Salah Y. Awad Alla Professor of Soil Physics in Desert Research Center DRC, Matariya ,Cairo

ABSTRACT The global expression of “Environment “is nowadays involves almost all items those related to human life as it is the main target for any environmental improvement. The proposed system of World Bank (WB) in 2005 for assessment of 5 main headlines with 28 indices with 76 characters had been adopted on large scale for about 150 regions. Egypt, as one of these studied regions, ranked in late order which we can attribute to the following reasons: 1- The majority of desert area allover the region with about 96 % (~ 965,000,000 km 2) so the so-called “desert character “control many of life style parameters. 2- The population growth impact (~ 2.2 % /year) in front of lower rate of suitable lands for agriculture (~ 1.4 % / year) which shrink the cultivated land per capita progressively. 3-The environmental impact of increasing consumption more than production especially for agricultural commodities. 4-The environmental impact of refused organic wastes especially in-farm ones than the recycled amount into beneficial forms (~ 4- 5 % only recycled). 5-The dramatic expansion of using agrochemicals for upraising the agriculture production and also dense cultivation as reached to ~ 3 times / year in some locations. 6-The gradual increase of water resources consumption which in turn decline the amount of water per capita (~ 630 m 3 / year / person). 7-The high costs of agricultural production in desert than old areas which impact on the economic situations of the farmers in these areas, so their settlement. 8-Habhazardeous selection of crop pattern in these locations (Rice and Banana in some areas dependant on groundwater). 9-Risks of wind and water erosion in many regions due to the so-called “desert character “. On the other hand, there are many efforts those directed to improve some or even all these stresses through adopting some new complemented approaches for avoiding or eliminating the deterioration of these locations. The lecture will spot light on some of these activities.


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TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 5 )

PHY - 5

YE

ASSOC.PROF. SAMI AL ARIKI

02:15

:

02:30

[email protected]

EFFECT OF TEMPERATURE AROUND TG AND TC ON THE OPTICAL CONSTANTS OF CD6SE84TE10 THIN FILM S. A. Al Ariki

ABSTRACT Thin films of Cd6Se84Te10 were prepared by thermal evaporation technique on glass, using the source materials have been prepared in our laboratory by direct reaction of high purity elemental Cd(99.9999%), Se(99.9999%), Te(99.9999%). The optical behavior of Cd6Se84Te10 amorphous thin films have been determined and analyzed. Normal-incidence transmission spectra have been measured in the range from 500 to 750 nm. Transmission spectra were used to determine the optical constants. Temperature effects on film properties through the changes optical constants have been investigated. Optical absorption measurements showed that fundamental absorption edge is a function of temperatures around Tg and Tc . The structure of the Cd6Se84Te10 films was investigated by scanning electron microscopy (SEM), microprobe analyses and X-ray diffraction (XRD).


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TUE : 23-03-2010

HALL[A]

ORAL - SEC11 ( 6 )

PHY - 8

EG

PROF. NADIA ABD EL-MOHSEN

02:30

:

02:45

[email protected]

THE PHOTOCATALYTIC ACTIVITY OF SPRAYED ZNO THIN FILMS DOPED WITH MG M.Boshta , N.A.Mohsen , M.O.Abou-Helal , D. Ghoneim , R.A.Zaghlool Solid State Physics Dept., National Research Center, El-Behoos str., 12311Dokki, Giza –Egypt Physics Dept., Al-Azhar Univ.for girls, Nasr City Solid State Physics Dept., National Research Center, El-Behoos str., 12311Dokki, Giza –Egypt Physics Dept., Al-Azhar Univ.for girls, Nasr City Solid State Physics Dept., National Research Center, El-Behoos str., 12311Dokki, Giza –Egypt

ABSTRACT As recalcitrant organic pollutants continue to increase in air and wastewater streams, the development of newer eco-friendly methods of destroying these pollutants became an imperative task. Among these methods, heterogeneous photocatalysis has proved to be of real interest as efficient tool for degrading both aquatic and atmospheric organic contaminants. As a well-known photocatalyst, ZnO has received much attention in the degradation and complete mineralization of environmental pollutants. For the purpose of increasing the photocatalytic efficiency of ZnO, Mg was doped into ZnO thin films. ZnO and Zn1-xMgxO thin films were prepared by spray pyrolysis method. Glass slides were used as substrates. The deposition temperature was 500ºC. Mg concentration was varied in the range of 0.05 to 0.3 in intervals of 0.05.The photocatalytic activity increased with Mg, and the film with x = 0.3 showed the best result.


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TUE : 23-03-2010 HALL[POSTER] POSTER - SEC03 ( 1 ) PHY - 61

EG

02:30 : 03:10

PROF. AHMED GAMAL EL DEEN MOSTAFA [email protected]

STRUCTURAL AND ELECTRICAL PROPERTIES OF V2O5 - PB3O4 - FE2O3 -LI2O GLASSES A. G. Mostafa , M. Y. Hassaan , E. R. Shaaban , A. M. Abdel-Ghany Physics Department, Faculty of Science, Al-Azhar University, Cairo, Nasr City, Egypt Physics Department, Faculty of Science, Al-Azhar University, Cairo, Nasr City, Egypt Physics Department, Faculty of Science, Al-Azhar University, PO 71452, Assiut, Egypt Faculty of Engineering, Sinai University, North of Sinai, Egypt

ABSTRACT Glasses with molar composition of [(70-x) V2O5. x Pb3O4. 10Fe2O3. 20Li2O], x = 0, 2.5, 5,7.5 and 10, was prepared by the melt-quenching method. The structure of the glass was investigated by IR and ME spectroscopy. The IR analysis confirm the supposed transformations among the present structural groups in the glass networks. In all glasses, it can be concluded that iron cations appeared in two different sits as (Fe3+)Th. The density was found to increase linearly, while the molar volume show approximately linear increase. The frequency dependent ac conductivity measured in the frequency range 1Hz to 100kHz in the temperature range from room temperature to 423K. It can be concluded that the CBH model is the predominant conduction mechanism in these glasses. The Dc conductivity as a function of Pb3O4 content showed firstly sharp decrease then it show slight increase. Cole-Cole equations are used to described both the dielectric constant and the dielectric loss.


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TUE : 23-03-2010

HALL[POSTER]


PHY - 4

SA

DR. ALI AL-SALAMI


OPTICAL AND THERMAL PROPERTIES OF BISMUTH TELLURITE GLASS IN COMPOSITION TEO2-BI2O3- NB2O5-ZNO A.E.Al-Salami King Khalid University,College of Science, Physics Department, POBox 9003Abha, Saudi Arabia

ABSTRACT The relationship between optical and thermal properties of bismuth tellurite glass in the system TeO2/ Bi2O3/ Nb2O5 / ZnO are investigated. Thermal characteristic were determined using DTA. The glass transition temperature, ( ), transformation temperatures of glass sample near the eutectic composition (softening temperature, TS), and onset temperature of crystallization , (TC), were measured. The optical absorption in the wavelength range (300- 3200 nm) was measured. From the absorption edge studies, the values of optical band gap (Eopt) and Urbach energy ( E) have been evaluated. The density, molar volume, refractive index, polarizability, molar refraction and third order nonlinear optical susceptibility have been calculated. Results obtained are discussed in terms of the glass structure. Keywords: tellurite glasses; thermal and optical properties.


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02:30 : 03:10

ASSOC.PROF. AZZA SAYED MAHMOUDE ABDRABO [email protected]

EG

ELECTRICAL CONDUCTIVITY AND THERMOELECTRIC POWER OF GE10¬INXSE(90-X) THIN FILMS A.S. Abd Rabo , GH. Adel Physics Department, Faculty of Science, Al-Azhar University, Cairo, Egypt. Physics Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.

ABSTRACT The dc conductivity and thermo-electric power of G10InxSe(90-x) (x=5,10,15) thin films are reported in the present work. The free-charge-carrier concentration is calculated with the help of dc conductivity and

thermo-electric

power

measurements.

The

calculated

values

of

the

free-charge-carrier

concentration have been used to evaluated the free-charge-carrier mobility from which the grain boundary potential was evaluated. The results are interpreted in terms of band tailing.


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TUE : 23-03-2010

HALL[POSTER]


PHY - 7

EG

DR. SAMIA NEGM

02:30

:

03:10

[email protected]

PHYSICAL STUDY OF A GLASSY NANOCOMPOSITE STRUCTURE BI 51.6PB 40.2CD 8.2 ALLOY A.A. Bahgat , M.M.El-Bahy , S. El-S. Negm Professor of experimental solid state physics, faculty of science Al-Azhar University (Boys) Professor of metal physics physics, faculty of science Al-Azhar University (Girls) Lecturer of physics, faculty of science Al-Azhar University (Girls)

ABSTRACT The Bi51.6Pb40.2Cd8.2 alloy is a member of radiation shielding alloy group that have the general formula Bi51.6Pb48.4-xCdx. The Bi51.6Pb40.2Cd8.2 alloy is prepared in ribbon and wire forms. Both two forms were subjected to different tests. This alloy shows similar or different behaviors with other members alloyed group. The most interesting and abnormal behavior is observed using the X-ray diffraction on Bi51.6Pb40.2Cd8.2 alloy, due to the highest degree of crystallization that found in the smooth ribbon surface. On the contrary with this behavior, it shows a glassy nanocomposite structure on its rough surface. This uncommon behavior of the sample for both smooth and rough surfaces can’t be refer to the drum speed (5.09, 5.93 and 18.65 m/s respectively), because all the samples were prepared with the same speeds. The glassy nanocomposite structure phenomena studied by different techniques (XRDmeasurements, scanning electron microscopy, transmission electron microscopy and hardness) to reveal whether this property refers to the change in its internal structure and differentiation in its rate of solidification on both sides.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 9

EG

PROF. KAMILIA SEDEEK

02:30

:

03:10

[email protected]

THE EFFECT OF FE AND CO SUBSTITUANTS ON THE STRUCTURAL AND MICROSTRUCTURAL PROPERTIES OF INTE AND INSE COMPOUNDS Prof. Z.K. Heiba , H.H. Hantour , Prof.K. Sedeek , Prof.K. El-Sayed

ABSTRACT For the first time, the structure and the microstructure of the two systems InTe1-xFex(Cox) and InSe1-xFex(Cox) are investigated using x-ray powder diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscope (SEM). The SEM images demonstrate the presence of stacking faults in all samples while the TEM confirms the scattering of the particle sizes between the quantum dot range and the bigger nano size. The XRD indicates the presence of a non-magnetic second minor phase of In4Te3 and In4Se3 in the InTe and InSe respectively. The content of this phase increases with the addition of Fe or Co. The presence of this phase inhances the ferromagnetic and the spintronic character of the systems. The refined structural parameters were obtained from Rietveld refinement using the program Material Analysis Using Diffraction MAUD. Applying the Win-fit program, the resulting apparent crystallite size (D) and the root mean square strain < eg> from single and multiple line analysis of the systems under study were calculated. The D was found to cover the small and large nano-scale. Applying the MAUD and Win-Fit programs for microstructural analysis, the crystallite size is found to speread from 10 to 50 nm for InSe(Fe/Co) systems, a pronounced anistropic crystallite size is found. Inserting Fe and Co increase both the crystallite size and lattice microstrain.


.. .:: ::. ..




EG

02:30 : 03:10


EFFECT OF (LI/FE) RATIO ON THE STRUCTURE OF SOME LITHIUM FERRITE SAMPLES A. M. Zoulfakar , A. G. Mostafa ME Lab., Physics Dept., Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt. ME Lab., Physics Dept., Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

ABSTRACT Soft magnets are now the basic elements of many electronic, electro-techniques and mechanical devices, and they can be used now in many appliances to prepare different techniques. However, some lithium ferrite samples were prepared chemicaly, to investigate the effect of lithium concentration and the calcination temperature on the ferrite formation and structural changes in these samples. The effect of the ratio (Li/Fe) on the ferrite formation was checked by X- ray diffraction, where single phase of lithium ferrite was obtained only when such ratio was (1/5). Mossbauer effect spectroscopy was also applied to investigate the structure of iron ions in the ferrite matrix as well as to calculate the internal magnetic field of both iron sites in the ferrite phase. The internal magnetic field that detected by ME spectroscopy was found to depend on both the (Li/Fe) ratio and the heat treatment regime. Different structural groups were characterized to be present in the ferrite matrix as concluded by FTIR spectroscopic analysis.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


02:30 : 03:10

PHY - 14

EG

PROF. NADIA MOHSEN

[email protected]

INFLUENCE OF ZINC ON OPTICAL, ELECTRICAL AND STRUCTURAL PROPERTIES OF (ZNX CD1-X ) S FILMS D. Ghoneim Physics Department Faculty of Science, Al-Azhar University For Girls, Cairo, Egypt

ABSTRACT (Znx Cd1-x) S thin films have been prepared in the entire composition range from Cds to Zns on glass substrate using the solution growth technique. To deposit good quality films, optimum conditions have been determined. Wide band gap ternary films have many applications in hetero junction solar cells. The optical, electrical resistivity and structure of these films have been studied by optical transmission, conductivity technique, scanning electron microscope (SEM) and X-ray diffraction (XRD). It was noticed that the microstructure and lattice parameter and the values of the absorption edge shifted towards the shorter wave length region and hence the direct band gap energy varied from 2.47 ev for Cds 3.5 ev for Zns films. Electrical conductivity studies revealed that the resistivity increases with increasing Zn content.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 15

EG

DR. SAMIA NEGM

02:30

:

03:10

[email protected]

THERMAL, ELECTRICAL AND MECHANICAL PROPERTIES OF LEAD-FREE TIN SOLDER ALLOYS CONTAINING BI AND IN M. M. EL-BAHAY , S. S. NEGM , A. A. BAHGAT

ABSTRACT Two groups of low melting temperature lead-free solder alloys with tin base metal 75 and 80 Wt. % and bismuth > 12.5 Wt. % and 10 Wt % namely: (A) Sn75 In25, Sn75 In12.5 Bi12.5 and Sn75 Bi25 and (B) Sn80 In14, Bi6 and Sn80 In20 alloys were prepared. Both groups were subjected to thermal, electrical and mechanical studies to reveal their physical properties. The study carried out shows that the soldering sub-groups namely: Sn75In25 and Sn80In20 show good ductility character. Accordingly, they respond to the creep and microstructure mechanical tests. The additions of few % of bismuth to other prepared samples of the two sub-groups increase their brittle character. While the addition of Bi to Sn-In alloys causes decreases their amorphous character. The study also revealed that the alloys, which offer the suitable properties for solders application are Sn75-Bi25 from sub-group A and Sn80-In20 from subgroup B. This is because they have the lowest electrical resistivity, low pasty range and good wettability with Cu and suitable mechanical properties.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 17

EG

DR. FATMA AHMAD

02:30

:

03:10

[email protected]

CORRELATION BETWEEN ELECTRICAL CONDUCTIVITY AND POSITRON ANNIHILATION LIFETIME MEASUREMENTS IN SUPERIONIC GLASSY SYSTEM F. Ahmad , E. Gomma , M. Mohsen , M.M. ElOkr Physics Department, Faculty of Science. Azhar University, Girls Branch, Cairo, Egypt Physics Department, Faculty of Science. Ain Shams University, Cairo, Egypt Physics Department, Faculty of Science. Ain Shams University, Cairo, Egypt Physics Department, Faculty of Science. Azhar University, Cairo, Egypt

ABSTRACT Superionic glassy system xAgCl-(100-x)(Ag2O-GeO2), where x ranged from 10 to 40% has been investigated. The variations of glass density, electrical conductivity and positron annihilation lifetime have been studied. It is observed that the addition of AgCl cause remarkable increase in the free Ag+- ion responsible for conductivity of glass. The increase in the size of vacancies has been proved by positron annihilation lifetime measurements being responsible for the increase in the mobility of charge carriers and hence the conductivity.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 18

EG

DR. FATMA AHMAD

02:30

:

03:10

[email protected]

STRUCTURAL PROPERTIES OF SILVER BOROGERMANTE SUPERIONIC GLASSY SYSTEM M. Elokr , Asmaa.AbdElGhany , F.M. Hafez , F. Ahmad Physics Department, Faculty of Science, Azhar University, Cairo, Egypt Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt. Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt. Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt.

ABSTRACT The structure of supersonic system 50AgI-20Ag2O-yGeO2-(30-y)B2O3 where y=0, 5, 10, 20, 30 % have been prepared and investigated by X-ray diffraction, MIR and DSC analysis. By increasing temperature and/or heat treatment peaks due to growth of AgI microdomains are observed in XRD patterns due to a-AgI microdomain. IR spectra show that the addition GeO2 reduces the germanium non bridging oxygen, and enhances the formation of octahedral groups, as well as the borate non bridging oxygen increases, and the formation of tetrahedral groups decrease. The addition of GeO2 to B2O3 content enhances glass forming ability and stability.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 19

EG

DR. FATMA AHMAD

02:30

:

03:10

[email protected]

OPTICAL PROPERTIES AND I-V CHARACTERISTIC CURVE OF CHALCOGENIDE AMORPHOUS GE–SB–TE FILMS Afaf A. Abd El-Rahman , F.M.Hafez , F. Ahmad , M.M. Elokr Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt Physics Department, Faculty of Science, Azhar University, girls branch, Cairo, Egypt Physics Department, Faculty of Science, Azhar University, Cairo, Egypt

ABSTRACT The optical properties of solid films of chalcogenide glass system Ge-Sb-Te were investigated. Elemental composition of the two investigated samples is determined by the energy dispersion X-ray technique. They were found to be Ge5 Sb32 Te63 and Ge9 Sb27 Te64, denoted by C1 and C2, respectively. X-ray diffraction technique is employed to characterize the structure of the prepared samples, before and after annealing. The influences of composition and film thickness on the optical band gap (Eo) were investigated at room temperature. This was done by an analysis of transmittance (T) and reflection (R) spectra in the fundamental absorption region. It was found that the magnitude of Eo decreases with increasing Ge content. The obtained results were interpreted in terms of the change of cohesive energy (C.E) as a function of Ge content. The cohesive energy was estimated by employing the chemical bond approach. Hysteresis I-V characteristic curves for compositions C1 and C2, at 300 nm thickness indicate that, composition C1 may be used as read-write material and C2 as read-rewrite material.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


02:30 : 03:10

PHY - 20

LY

DR. MOHAMED SAEID

[email protected]

ULTRASONIC NON-LINEAR DEMODULATION PHENOMENON IN AIR Dr. Mohamed .T Saeid

ABSTRACT This wark is related to acoustic in free-field measurement of sound absorption in pourous materials, such as cellular plastic foams, glass-wool or recycled felt materials. the emphasis is given towards fine metrology of absorption in view of potential industrial applications. A enables to measure absorption acoustical data down to 100Hz due to the exploitation of the non -linear ultrasonic demodulation phenomenon in air.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 21

EG


02:30

:

03:10

[email protected]

PHYSICAL CHARACTERIZATION OF AMORPHOUS GESE2 FILMS L.A. Wahab , A. Adam , N. Makram , K. sedeek , M.R. Balboul

ABSTRACT AC conductivity, photodarkening and electron spin resonance measurements are carried out on amorphous GeSe2 films. The AC conductivity is measured as a function of frequency and temperature. The AC conduction mechanism of the studied films is interpreted via single electron transfer between the C1-[C3+] and C0 centers. The photodarkening is induced with HeNe laser and observed as transmission and reflection changes through 1.02 µm thick film. Both reversible and irreversible processes are detected with these measurements. The reversible process is induced by defects located in energy at the band edge. The presence of these defects is confirmed by the blue shift of the band edge and the restoration of the initial optical gap value by annealing. On the other hand, the irreversible process results from defects situated in energy into the band tails. These defects cause a considerable additional absorption below the band edge and a remarkable decrease in the refractive index. Electron spin resonance experiments are carried out for the as-deposited, irradiated and annealed film, Free spin centers with concentration 1.013×1015 cm-3 are detected at g = 2.0064 for the as-deposited film, These centers are assumed to be intrinsic since their density slightly decreases by laser irradiation. The defects associated with the photodarkening effect are suggested to originate from topological changes in bond length. Bond angle and/or bond configuration.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 22

EG

DR. SAMIA NEGM

02:30

:

03:10

[email protected]

THERMAL EXPANSION OF SODIUM METAPHOSPHATE SEALING GLASS AS BEAING AFFECTED BY CROSSLINKING Prof. A.M. Nassar , Prof. Sh. N. Radwan , Prof. M. M. El Oker , E. N. El Kholy

ABSTRACT The wide need for sealing glass to different metal devices generated a need for sealing glass. Phosphate glasses are attractive as glass-metal seals due to their low melting temperature, low viscosity, and prepare thermal expansion. In the present work the effect of MO (Cu, ZnO and CdO) on the thermal expansion of the system (50-X)Na2O-50P2O5 –xMO, where x=0, 5, 10, ------25% have been studied. The thermal expansion coefficient have been determined theoretically ( th) according to Makshima-Makemzi model (M-M) and experimentally measured ( exp.). The thermal expansion coefficient of the three groups are found to decrease as Na2O is replaced by MO, which attributed to the crosslinking of the system arising in more compacted system. For the dilatometric curves both the characteristic temperature, glass transition temperature Tg and glass softening temperature Td are determined and found to composition dependant due to the crosslinking.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 23

EG

DR. SAMIA NEGM

02:30

:

03:10

[email protected]

ELECTRICAL AND OPTICAL PROPERTIES OF SOME TELLURITE GLASSES H.A. Mady , A. A.El Fatah , I. I.Shaltout , A. A.Bahgat

ABSTRACT Five samples was prepared with the molar formula [79.9 TeO2 + 0.1 Sm2O3 + (20 – x) Na2O + x K2O] where x = 6, 8, 10, 12 and 16 mol%. The mixed alkali effect was studied for the present glass system using density, IR Spectra, DTA, DC conductivity, AC measurements [AC conductivity and dielectric constant] and the optical properties. X-Ray diffraction shows that all the present samples are in the glassy state. The electrical parameters such as the real ( ') and imaginary ( '') dielectric constant and the loss factor (tan

) were extract from these

experiments and shows the mixed alkali effect. The optical measurement shows that allowed indirect transition occurs at the fundamental absorption edge. The band tail width of localized state was calculated. The optical energy gap have a minimum value at the alkali ratio Y ~ 0.55 and shows the mixed alkali effect as the activation energy do.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


02:30 : 03:10

PHY - 24

EG

PROF. NADIA MOHSEN

[email protected]

EFFECT OF ANNEALING ON THE ELECTRICAL AND OPTICAL PROPERTIES OF CU5GA33TE 62 THIN FILM D. Goneim , S. Nasser , N. A. Mohsen , A. Awad Al-Azhar Univ. for Girls, Physics Dept., Nasr City, Cairo Al-Azhar Univ. for Girls, Physics Dept., Nasr City, Cairo Al-Azhar Univ. for Girls, Physics Dept., Nasr City, Cairo Al-Azhar Univ. for Girls, Physics Dept., Nasr City, Cairo

ABSTRACT Thin film of Cu5Ga33Te62 system has been prepared by using thermal evaporation technique with 45 nm thickness. The electrical conductivity assessment has been carried out on this film in the temperature range of 300 - 425 K. The film has been annealed at 323,348,373,398,423 and 453 K under vacuum for 3h. The temperature dependence of the electrical conductivity for all annealing temperatures has been recorded and discussed. The results were analyzed in order to establish the activation energy of each state. With the increase in the annealing temperature the film showed phase transition to the crystalline state. The optical properties of Cu5Ga33Te62system have been studied as a function of annealing temperature. The results showed that the optical transitions in the wavelength range (200-1100) nm are direct transitions where the values of Eg are decreased with increasing annealing temperature, i.e. the absorption edge shifted toward a higher wavelength or a lower energy. The optical constants k, n, r and E of the film at different temperatures are influenced by the heat treatment.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 25

EG

DR. SAMIA NEGM

02:30

:

03:10

[email protected]

DYNAMICAL MOMENT OF INERTIA, ALIGNMENT AND I = 2 ENERGY STAGGERING PROPERTIES IN ODD-MASS GOLD NUCLEI M. Allam

ABSTRACT The dynamical moment of inertia, alignment and Routhian of the negative sig- Nature deformed rotational bands in odd-mass gold nuclei 181; 183;185Au have been Deduced from the excitation energies and the spins of the observed levels as a function of the rotational frequency. In framework of cranked shell model the calculation involves the subtraction of the angular momentum and energy of the collective rotations. Suitable moment of inertia references have been chosen. The

I = 2energy staggering or the

I = 4 bifurcation is also investigated by using

the finite difference approximation to the fourth derivative of the transition energies which include five consecutive transition energies.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 26

EG

DR. TAMER EL-SAYED

02:30

:

03:10

[email protected]

ABNORMALITIES IN VISUAL EVOKED POTENTIALS ASSOCIATED WITH CHRONIC ALCOHOL USES AND ABSTINENCE Mohamed I. El-Gohary , Khairy M. Eraba , Tamer M. El-Sayed Al Azhar university, Cairo, Egypt Al Azhar university, Cairo, Egypt Al Azhar university, Cairo, Egypt

ABSTRACT The present study aimed to evaluate the effect of alcohol consumption and abstinence on central nervous system. In order to study such effect, a pattern visual evoked potential (VEP) analysis on chronic alcoholic rats was performed. Twenty rats were injected intraperitoneal with ethyl alcohol (1.5 g/Kg) for six weeks. The rats showed abnormal VEP component results. In order to test the effect of abstinence period on N3 latency values, alcohol treated rats were divided in to two subgroups. Group I consisted of ten rats which had been abstinent for three weeks, and Group II consisted of ten rats which had been abstinent for four weeks. The mean N3 latency of Group I and Group II was 218 and 220 ms respectively; and when compared to normal controls the difference was statistically significant. Abnormal VEP in chronic alcohol treated rats suggests that they may be useful in the detection of early changes and in following up the progress of patients with such disorder.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 27

EG

DR. AMANY OMAR

02:30

:

03:10

[email protected]

IR, DENSITY AND DTA STUDIES THE EFFECT OF REPLACING PB3O4 BY CUO IN PSEUDO-BINARY LI2B4O7-PB3O4 GLASS SYSTEM A.M.Sanad , I.Kasif , A,Abd El- ghany , A.Abd El- Maboud Physics Department, Faculty of Science, Al -Azhar University,Nasr City, 11884, Cairo,Egypt Physics Department, Faculty of Science, Al -Azhar University,Nasr City, 11884, Cairo,Egypt Physics Department, Faculty of Science, Al -Azhar University,Nasr City, 11884, Cairo,Egypt Physics Department, Faculty of Science, Al -Azhar University,Nasr City, 11884, Cairo,Egypt

ABSTRACT Effect of replacement Pb3O4 by CuO on structure and properties of pseudo-binary [75%] Li2B4O7-[25-x%]Pb3O4 glass system, where X=0,5,10,15,20 and 25% molCuO,have been investigated. IR spectra of the prepared glasses show that CuO goes into the network and play also a role as a glass modifier. The addition CuO decrease the formation of tetrahedral groups [BO4] and increasing the triangle one [BO3], led to increase the borate non bridging oxygen [NBO]. The observed increase in Tg with CuO reflect increase in bond strenth, also the glass forming ability and stability decrease with increasing CuO reflects the reduction of the network rigidity and loosening of glassy structure. The density and molar volume was discussed in terms of the structural modifications that take place in glass matrix. The distance between Cu-Cu atoms and the Polaron radius have been carried for all samples.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 28

EG

DR. AHMED ELDIB

02:30

:

03:10

[email protected]

COMPUTER PROGRAM DESIGNED FOR RADIOTHERAPY DOSE CALCULATION. Ahmed.A.ELDib , Mohamed I. ElGohary Department of physics -Faculty of science -ALAzhar university Department of physics -Faculty of science -ALAzhar university

ABSTRACT A graphical user interface program was designed to perform dose calculation of shaped beams. Mantle field is an example of shaped fields which is usually encountered in treatment of Hodgkin disease. The designed program allows dose calculation to be performed on personal computer rather than using the commercial treatment planning work stations. The program code was developed based on sector integration algorithm. The X-ray image of the patient is first displayed on screen and then the tumor is contoured. This process digitizes and stores the contour into an array of coordinate points. The outline of the tumor is then subdivided into a series of sectors. Tables of scatter contribution of different field sizes are stored in a table that was linked to the code. The program calculates the length of each sector. Then the code obtains the scatter contribution of each sector by utilizing the stored tables. The average scatter contribution of the whole shaped field is then computed and the total dose is determined. Several shaped beams have been Calculated by this program and compared to an existing commercial treatment planning system. The designed code showed good agreement with the commercial system and to measurement done in phantom.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 33

EG

MR. ALHOSEIN ABD ELNAEIM


PHOTOELECTRICAL PROPERTIES OF INX(SE75TE25)100-X (0 THIN FILMS

X

10 AT.%)

A. M. Abd Elnaeim , K.A. Aly , N. Afify , A. M. Abousehly Solid State Physics, Al Azhar University Solid State Physics, Al Azhar University Solid State Physics, Assiut University Solid State Physics, Al Azhar University

ABSTRACT Abstract This work studied the electrical and photoelectrical properties of Inx(Se75Te25)100-x (0

x

10 at.%) amorphous chalcogenide films. The composition dependence of the steady state

photocurrent at room temperature shows that, the photoconductivity increases while the photosensitivity decreases with the increase of In content. A study of photoconductivity of Inx (Se75Te25)100-x at different levels of light intensity showed that, the photoconductivity increases exponentially with the increase of light intensity. Furthermore, the Photocurrent (Iph) related to the light intensity (G) through the well known power law (Iph = Gr), where the exponent r for Inx(Se75Te25)100-x films has been found nearly 0.5 suggesting bimolecular recombination. The transient photoconductivity measurements show that, the lifetime of the carrier decreases with increasing the light intensity. This decrease suggests that the photoconductivity mechanism in our films was controlled by the transition trapping processes. The increase of In content leads to shifting of the photocurrent spectra to the lower energies (long wavelengths) i.e. a monotonic decrease in the band gap furthermore, a monotonic decrease of the free carrier life time of Inx(Se75Te25)100-x thin films. The chemical-bond approach successfully applied to interpret the obtained results.


.. .:: ::. ..




02:30 : 03:10

ASSOC.PROF. MOHAMED EL-SAADAWY [email protected]

EG

MAGNETIC AND ELECTRICAL PROPERTIES OF CO(2-X) MN (X) W-TYPE HEXAGONAL FERRITES M. El-Saadawy Physics department, Faculty of Science, Kafr El-Sheikh University .

ABSTRACT Polycrystalline samples of W-type hexagonal ferrite (Me-W, where Me = Co and Mn) have been prepared by the usual ceramic technique. Low temperature magnetic properties, curie temperatures, the potential barrier and d.c. resistivity of Co2-xMnxBaFe16O27 hexagonal ferrites were studied as a function of Co concentrations. The results show that, saturation magnetization and Curie temperature (Tc) of the samples decrease with increase of Mn2+ ion substitution. This behavior can be explained on the basis that the value of the magnetic moment, µ, of Mn2+ ion is higher than that of Co2+ ion. The results of the electrical resisitivity and potential barrier of the samples are attributed to the hopping conduction mechanism of electrons. The increase of the dielectric constant and the d.c. conductivity with rising temperature was explained by decreasing in the potential barrier . This effect helped the jumping electrons and holes at the B sites for orientation in the a.c. field direction leading to increase of dielectric polarization


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 37

EG

DR. MONA ALLAM

02:30

:

03:10

[email protected]

NATURE OF TRANSITION ENERGY STAGGERING PHENOMENON IN THE SUPER DEFORMED NUCLEAR ROTATIONAL BANDS M.H.Ghoniem , M.Allam , Eman Saber

ABSTRACT The influence of the finite differences approximations to higher order derivatives on the staggering properties in the nuclear super deformed (SD) rotational bands is studied. Four SD bands is proposed that may represent favorable cases for observation of the

I = 2 staggering,

namely: 149Gd (SD-1) and 194Hg (SD-1, SD-2, SD-3). The spin of the band head has been extracted by using an approach based on the Harris extension of the cranked model. For each band we represented the dynamical moment of inertia by a power series expansion in even powers of rotational frequency. Simulated search program was written to determine the expansion coefficients. To see the variations in the transition energies, we performed staggering parameter analysis based on subtracting from experimental energies a two-parameter collective rotational reference. The feature of the

I = 2 staggering depends on the multipoint formulae

used. For one-point formula, we noticed a regular oscillations in yrast SD band in 149Gd, while irregular kinks in SD bands in 194Hg. The two-point formula, provided us with information about the dynamical moment of inertia J(2), the J(2) decreases with increasing spins for A~150 and increases for A~190 mass regions. The three-point formula produces less numbers of oscillations than the four or five-point formulae. The five-point formula which contains five consecutive transition energies shows a

I = 2 staggering. That is, the staggering effect is most

sensitive and pronounced for the highest derivative.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 39

EG

DR. MOHAMMED EMAM

02:30

:

03:10

[email protected]

EARLY RECOGNITION OF LUNG'S AIR SACS WALL COLLAPSING M. EMAM , M.I. El GOHARY , J-F RENAUD de la Faverie , N. GHARBI Physics Department, Faculty of Sciences, Al-Azhar University, Cairo, Egypt. Physics Department, Faculty of Sciences, Al-Azhar University, Cairo, Egypt. CNRS UMR 8162, Department of medical research, Le Plessis-Robinson, France. Surgical Centre of Marie-Lannelongue Hospital, Le Plessis-Robinson, France.

ABSTRACT The paper discusses the possibility of applying a non-liner analysis approach on air density distribution within lung airways tree at any level of branching . Computed Tomography (CT) source images of the lung are subjected to two phases of treatment in order to produce a fractal coefficient of the air density distribution. In the first phase, raw pixel values from source images, corresponding to all possible air densities, are processed by a software tool, developed in order to, construct a product image. This is done through Cascading Elimination of Unwanted Elements (CEUE): a preprocessing analysis step of the source image. It identifies values of air density within the airways tree, while eliminating all non-air-density values. Then, during the second phase, in an iterative manner, a process of Resolution Diminution Iterations (RDI) takes place. Every resolution reduction produces a new resultant histogram. A resultant histogram is composed of a number of peaks, each of which corresponding to a cluster of air densities. A curve is plotted for each resolution reduction versus the number of peaks counted at this particular resolution. It permits the calculation of the fractal dimension from the regression slope of log-log power law plot.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 40

EG

DR. MOHAMMED EMAM

02:30

:

03:10

[email protected]

CHARACTERIZATION OF LUNG’S EMPHYSEMA DISTRIBUTION: NUMERICAL ASSESSMENT OF DISEASE DEVELOPMENT M. EMAM , M.I. El GOHARY , J-F RENAUD de la Faverie , N. GHARBI Physics Department, Faculty of Sciences, Al-Azhar University, Cairo, Egypt. Physics Department, Faculty of Sciences, Al-Azhar University, Cairo, Egypt. CNRS UMR 8162, Department of medical research, Le Plessis-Robinson, France. Surgical Centre of Marie-Lannelongue Hospital, Le Plessis-Robinson, France.

ABSTRACT Chronic Obstructive Pulmonary Disease (COPD) refers to a group of lung diseases that block airflow and make it increasingly difficult for you to breathe. Emphysema and chronic bronchitis are the two main conditions that make up COPD, but COPD can also refer to damage caused by chronic asthmatic bronchitis. Pulmonary emphysema is defined as a lung disease characterized by “abnormal enlargement of the air spaces distal to the terminal, non-respiratory bronchiole, accompanied by destructive changes of the alveolar walls”. These lung parenchymal changes are pathognomonic for emphysema. Chronic bronchitis is a form of bronchitis characterized by excess production of sputum leading to a chronic cough and obstruction of air flow. In all cases, damage to your airways eventually interferes with the exchange of oxygen and carbon dioxide in your lungs. Habitual techniques of emphysema’s diagnosis are based on indirect features, such as clinical examination; Pulmonary Function Tests (PFT) and subjective visual evaluation of CT scans. These tests are of limited value in assessing mild to moderate emphysema.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 49

EG

DR. AZZA NADY


ELECTRICAL AND MORPHOLOGICAL CHANGES OF ERYTHROCYTES OF JAUNDICED NEONATES FOLLOWED BY DIELECTRIC SPECTOSCOPY Azza Nady M.H. Lecturer

ABSTRACT Neonatal jaundice, an extremely common occurrence amonge neonates in the first week of life, can represent a benign physiological process or be the harbinger of serious illness with associated severe neurotoxicity. In the present study, a group of hundred infants (84 patients, from various clinical subpopulations + 16 controls) were included. The morphological changes of RBG's membrane of jaundiced neonates and G-6-PD (glucose-6-phosphate dehydrogenase) deficient ones as well as that for neonates with Crigler Najjar (CN1) syndrome were evaluated. The quantification of the morpho;ogical shape changes revealed that G-6-PD deficient neonates had a significant increase in echinocytes as well as in the morphological index (p < 0.01), when compared with the data from healthy neonates or G-6-PD non-deficient ones. The dielectric properties of neonatal erythrocytes have been studied in the frequency range 20 Hz to 100 KHz. Results showed that a superposition of two Cole-Cole relaxation processes yielded an excellent fit. The change in the dielectric parameters for erythrocyte samples reflect changes occurring in blood due to neonatal hyperbilirubinemia and G-6-PD deficienct. Thus the combined application of dielectric spectroscopy and scanning electron microscope can be used as an efficient manner for monitoring abnormalities in blood due to these pathological cases.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 43

EG

DR. MOUKHTAR HASSAN

03:20

:

04:00

[email protected]

OPTICAL BEHAVIOR OF ND DOPED BOROCROMATE GLASSY SYSTEM M. A. Hassan , M. Farouk , A. H. Abdullah , I. El kashf , M. M. Eloker Physics Department. Faculty of science, Al-Azhar University, Cairo, Egypt. Physics Department. Faculty of science, Al-Azhar University, Cairo, Egypt. Applied science Department, College of Technological Studies, Kuwait. Physics Department. Faculty of science, Al-Azhar University, Cairo, Egypt. Physics Department. Faculty of science, Al-Azhar University, Cairo, Egypt.

ABSTRACT Glassy system of composition 74 b2o3-(25-x)li2o-xcr2o3-Nd2o3, Where x=0, 0.1, 0.2, 0.3, 0.4, 0.5 mol.%. Has been prepared by conventional melt quenching technique the density has been estimated and the molar volume was calculated. The obtained data reveal that, both density and molar volume are almost composition independent. Optical absorption spectra were recorded and the optical gap energy and the band tail width have been obtained. It was observed that, the band gap decreases with increasing cr2o3 content, while as the band tail width follow opposite trend.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 46

EG

ASSOC.PROF. SALAH EL-BADRY


INFLUENCE OF PROCESSING PARAMETERS ON THE MAGNETIC PROPERTIES OF MN-ZN FERRITES S. A. El-Badry , S. F. Moustafa , A. G. Mostafa

ABSTRACT Pure MnO2, ZnO and Fe2O3 were used to prepare a Mn-Zn Ferrite sample of the nominal composition Mn0.64Zn0.29Fe2.07O4. The mixed oxides were milled for several times up to 40 hrs, using three-dimensional ball-milling machine. The powders of as-mixed, milled for 20 hrs, and milled for 40 hrs were examined by X-ray diffraction and Mossbauer Effect (ME) spectroscopy to asses any changes as a result of milling. The investigated powders were further mixed with PVA, granulated, cold pressed and sintered at different temperatures (1000, 1300 and 1400 ºC) for 2 hrs and were then investigated also by XRD and ME. The magnetic properties of the investigated samples before and after sintering were characterized using VSM (at a field of 15 k Oe) and ME at room temperature. When the powder oxides were milled for 20 hrs, detectable diffusion reaction was observed where the centers of all XRD peaks of Fe2O3 and MnO2 shifted to higher 2

angles, suggesting that Zn+2 cations had diffused through Fe+3

and/or Mn+4 lattices. Breadth of XRD peaks is also observed due to the refinement of the powders by milling. On the other hand, milling for 40 hrs resulted in the formation of spinal phase of (Zn, Fe), but MnO2 was disappeared probably due to the formation of amorphous structure. Sintering at 1000, 1300, and 1400 ºC resulted in the formation of different spinal (Mn-Zn) ferrites. It can be concluded that, the best conditions for obtaining a soft manganese zinc ferrite (single phase) are the milling of the powder oxides for 40 hrs and the sintering at 1300ºC for two hrs.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 47

EG

MR. ATEF ISMAIL

03:20 : 04:00 phph1@yahoo

ELASTIC SCATTERING ANALYSIS OF 11BE AND 6HE HALO NUCLEI FROM THE PROTON USING JLM EFFECTIVE NN INTERACTION M Tammam , Atef Ismail , Z. M. M. Mahmoud

ABSTRACT The present work is devoted to study the elastic scattering 11Be and 6He halo nuclei from the proton. The 11Be is considered as a core (10Be) surrounded by one halo neutron with separation energy 1n =0.5 MeV, where 6He is consists of a central part (4He) with halo of two neutrons with a separation energy 2n=0.978 MeV. The single folding model approach (SF) is used to reproduce the optical potential (OP) where many different forms of the nuclear density distributions for 11Be and 6He halo nuclei are used to be folded with the energy-and density dependent JLM effective NN interaction, The calculated OP then is used to calculate the differential cross sections for the studied reactions. Comparison with the experimental results is made.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 48

EG

ASSOC.PROF. SAYED SALEM


ME SPECTRA AND ELECTRICAL TRANSPORT PROPERTIES OF PHOSPHATE GLASSES CONTAINING DIFFERENT TMI,S s.m.salem

ABSTRACT The change in the physical and structural properties as a function of the atomic number of the transition metal ions ( TMI,s) of some sodium phosphate glasses have been studied. The ME analysis showed that iron ions appeared in two different oxidation states, namely, Fe3+ and Fe2+. Moreover, Fe3+ ions increases as the atomic number of the TMI,s increase. The ac conductivity showed gradual decrease as the atomic number of TMI,s increased. On the other hand, the activation energy exhibits a linear increase as the atomic number increased.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 11

EG

DR. SAMIA NEGM

03:20

:

04:00

[email protected]

CORROSION, MECHANICAL AND RADIATION SHIELD PROPERTIES OF BISMUTHLEAD ALLOYS FOR COOLED FAST NUCLEAR REACTOR S. S. NEGM , Dr. A. A. El-ZAMARAWY , Prof. M. M. EL-BAHAY , Prof. A. A. BAHGAT

ABSTRACT Melting point, specific heat, internal friction, elastic modules and corrosion of Bi50Pb50-xCdx where x= 2, 4, 6, 8 and 10 rapidly solidify alloys have been studied. The near surface materials have been characterized by microhardness together with the wetting characteristics on CuZn30 substrate as a function of time. A collimated beam of -rays emitted from Eu-152 source has been used as a source of gamma rays to calculate linear attenuation coefficient of -ray in these Bi alloys.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 50

EG

ASSOC.PROF. SAYED SALEM


EFFECT OF MN2+ IONS ON THE AC ELECTRICAL PROPERTIES OF SOME IRON DOPED PHOSPHATE GLASSES

ABSTRACT Oxide glasses doped with transition metal ions become now of high interest because of their variant applications in both science and technology. However, some iron doped phosphate glasses were prepared according the following molecular formula: (65-x)P2O5. 20 Na2O. 15Fe2O3. xMnO., Where x= 0, 2.5, 5, 7.5, 10, 12.5, 15. A constant acceleration ME spectrometer attached with 20 mCi 57Co radioactive source was used to characterize the state of iron in these glasses at room temperature . The ac electrical transport properties were also measured up to 320 oC. It was found that the ac conductivity increased as the Mn2+ cations increased gradually, while the electrical activation energy decreased. All the obtained results were analyzed on the bases of the introduced transition metal ions.


.. .:: ::. ..




EG

03:20 : 04:00


CHARACTERIZATION OF HYDROXYAPATITE DOPED WITH FE (III) G.A. Gamal , K.M.T Ereiba , A.G. Mostafa , A.H. Said physics department, Faculty of science, South Valley University, Qena, Egypt. Physics department, Faculty of science, Al-Azhar University, Naser city, Cairo, Egypt. Physics department, Faculty of science, Al-Azhar University, Naser city, Cairo, Egypt. physics department, Faculty of science, South Valley University, Qena, Egypt.

ABSTRACT Nowadays, calcium hydroxyapatite (HAP) appeared of high interest, since it represents the compatible inorganic component of the natural bones and it can directly bond to bone in vivo. It can be need widely used as coating material on bone implants due to its good osteoconductivity and osteoinductivity. Ions doped HAP have been used as catalyst or absorbents since the ion exchange method has introduced new properties in HAP which may applied to different applications However, in this article, Fe(III) doped hydroxyapatite (FeHAP) was prepared by wet chemical method. By comparison with pure HAP, the colour of FeHAP changed from white to brown. The intensity of the colour increased with the increases of iron content. XRD patterns showed that all samples were single phased HAP while the FTIR spectra revealed that all samples possesses the characteristic phosphate and hydroxyl adsorption bands of HAP. Mossbauer spectroscopy (ME) showed the paramagnetic characteristic of FeHAP particles. It appeared also that iron ions occupy two different sits octa-and tetra-hedral states .


.. .:: ::. ..




EG

03:20 : 04:00


STRUCTURAL AND PHYSICAL PROPERTIES OF THE NANO-CRYSTALLINE ALSUBSTITUTED CR-CU FERRITE M. A. Amer , A. Gamal-Eldin , T. M. Meaz , H. F. El-Ghazally Physics Department, Faculty of Science,Tanta university, Tanta Physics Department, Faculty of Science,Al-azhar University, Cairo, Egypt. Physics Department, Faculty of Science,Tanta university, Tanta Physics Department, Faculty of Science,Tanta university, Tanta

ABSTRACT Nanoparticles of the CuAlxCr0.8-xFe1.2O4 system (where x = 0.0, 0.2, 0.4, 0.6, and 0.8) were prepared by the chemical co-precipitation method. The structure of the samples was characterized by using, X-ray diffraction, VSM, Infrared and Mössbauer patterns and particle size distributions. The results indicated the ultrafine nature of the particles, where the crystallite size ranged from16 to 31 nm and the average particle size from 13 to 26 nm. The lattice parameters were dependent on the substitution factor x, where the oxygen parameter u was higher than the standard value 0.375 and independent on x. In addition to six absorption bands, a triple band attributed to the retained water in the samples were observed in the infrared spectra. The absorption bands indicated the existence of Fe Ions in the sample lattices. The Mössbauer and VSM patterns indicated the presence of small magnetic filed in the samples, where the saturation magnetization, coercivity, hyperfine interaction parameters, cation distributions and magnetization were dependent on x.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 54

EG

DR. SHAABAN SALEM

03:20

:

04:00

[email protected]

THERMAL CHARACTERISTICS, FT-IR SPECTRA, ELECTRICAL CONDUCTIVITY AND DIELECTRIC PROPERTIES OF LI2O-GEO2-ZNO-BI2O3-FE2O3 GLASSES Shaaban M. Salem , E. M. Antar , A. G. Mostafa , S. M. Salem , S. A. Elbadry Department of Physics, Faculty of Science, Al Azhar University, Cairo, Egypt Radiation Protection and dosimetry Department, National Center for Radiation Research & Technology, AEA Nasr. City, Cairo, Egypt Department of Physics, Faculty of Science, Al Azhar University, Cairo, Egypt Department of Physics, Faculty of Science, Al Azhar University, Cairo, Egypt Department of Physics, Faculty of Science, Al Azhar University, Cairo, Egypt

ABSTRACT (10Li2O-20GeO2-30ZnO-(40-x)Bi2O3-xFe2O3 where x = 0.0, 3, 6 and 9 mol%) glasses were prepared. A number of studies, viz. density, differential thermal analysis, FT-IR spectra, DC and AC conductivities and dielectric properties (constant ', loss tan

, AC conductivity,

ac, over a

wide range of frequency and temperature), were carried out as a function of iron ions concentration. The analysis of the results indicate that, the density and molar volume decrease with increasing iron content which may be due to some structural changes of the glass matrix. The glass transition temperature Tg and the onset of crystallization temperature Tx increase with the variation of concentration of Fe2O3 referred to the growth in the network connectivity in this concentration range, while glass-forming ability parameter T decrease with increase Fe2O3 content, indicating an increase in the concentration of iron ions that take part in the network-modifying positions. The FT-IR spectra evidenced that the main structural units are BiO3 and BiO6. With increasing iron content, FeO4 structural units can be observed but the presence of FeO6 structural units cannot be included. The temperature dependence of DC and AC conductivities at different frequencies was analyzed using Mott’s small polaron hopping model and the high temperature activation energies have been estimated and discussed. The dielectric constant and dielectric loss increased with increasing temperature and Fe2O3 content.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 55

EG

DR. SHAABAN SALEM

03:20

:

04:00

[email protected]

STUDIES ON THE INFLUENCE OF CUO ON DC AND AC CONDUCTIVITY AND DIELECTRIC PROPERTIES OF LI2O–PBO –B2O3–SB2O5 GLASSES Shaaban M. Salem Department of Physics, Faculty of Science, Al Azhar University, Nasr City, Cairo, Egypt

ABSTRACT 15Li2O–45B2O3–30PbO–(10- x)Sb2O5– xCuO (where x = 0, 2.5, 5 and 7.5 mol%) glasses, were prepared. X-ray diffraction (XRD) confirms the amorphous nature of these glasses. It was observed that, the density (d) decreases gradually with the increase of copper oxide content in such glasses. This may be due to the effect of the polarizing power strength (which is a measure of ratio of the cation valance to its diameter). The dc conductivity decreases while the activation energy increases with the increase of CuO content, and it appeared to be electronic and ionic depends strongly upon the average distance, R, between copper ions. Analysis of the electrical properties has been made in the light of small polaron hopping model. The parameters obtained from the fits of the experimental data to this model are reasonable and consistent with the glass composition. The conduction mechanism is attributed to non-adiabatic hopping of small polaron. Dielectric properties (constant

, loss tan , ac conductivity, ac, over a range

of frequency and temperature and frequency exponent s) of these glasses have been studied. The ac conductivity results suggests that the correlated barrier hopping (CBH) is dominant in ac conductivity.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 56

EG

DR. SHAABAN SALEM

03:20

:

04:00

[email protected]

INVESTIGATION OF DC AND AC CONDUCTIVITY AND DIELECTRIC PROPERTIES OF BI2O3–GEO2– PBO–MOO3 GLASSES Shaaban M. Salem Department of Physics, Faculty of Science, Al Azhar University, Nasr City, Cairo, Egypt

ABSTRACT Glasses having compositions 40Bi2O3–20GeO2–(40-x)PbO–xMoO3 (where x = 3, 6, 9, 12 and 15 mol%) were prepared by normal melt quenching technique. The density (d) decreases gradually with the increase of the MoO3 content in such glasses. This may be due to the lower molecular weight MoO3 is substituted by a higher molecular weight PbO. The dc conductivity decreases while the activation energy increases with the increase of the MoO3 content. The dc conductivity in the present glasses is electronic depends strongly upon the average distance, R, between the Mo ions. Analysis of the electrical properties has been made in the light of small polaron hopping model. The parameters obtained from the fits of the experimental data to this model are reasonable and consistent with glass composition. The conduction is attributed to non-adiabatic hopping of small polaron. Dielectric properties (constant conductivity,

, loss tan

, ac

ac, over a range of frequency 0.12-100KHz and temperature 325-600K and

frequency exponent s) of these glasses have been studied. The ac conductivity results suggest that the correlated barrier hopping (CBH) is dominant in ac conductivity.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 58

EG

DR. SHAABAN SALEM

03:20

:

04:00

[email protected]

STRUCTURAL AND DIELECTRIC PROPERTIES OF LI2O-ZNO-BAO-B2O3-CUO GLASSES Shaaban M. Salem Department of Physics, Faculty of Science, Al Azhar University, Nasr City, Cairo, Egypt

ABSTRACT DTA, AC conductivities, dielectric properties (constant ', loss tan

, AC conductivity,

ac, over

a wide range of frequency and temperature), and FT-IR absorption measurements have been performed for (15Li2O-30ZnO-10BaO-(45-x)B2O3-xCuO where x = 3, 6, 9, 12 and 15mol%) glass system. The mode in which the addition of the copper ions influences the structure of Li2O-ZnO -BaO-B2O3 glass matrix was analyzed.The analysis of the results indicate that, the density increase with increasing copper content, glass transition temperature Tg and the onset of crystallization temperature Tx increase with the variation of concentration of CuO referred to the growth in the network connectivity in this concentration range, while glass-forming ability parameter T decrease with increase CuO content. The FT-IR spectra showed the presence of some bands that are assigned to vibrations of B–O bonds from BO3 and BO4 units. The data obtained by these measurements reveal the structural changes in the Li2O-ZnO-BaO-B2O3 glass matrix by controlled CuO.Dielectric properties (constant

, loss tan , ac conductivity,

ac, over

a range of frequency and temperature) of these glasses have been studied.The dielectric constant, ac conductivity and dielectric loss increased with increasing temperature and CuO content.


.. .:: ::. ..



TUE : 23-03-2010

HALL[POSTER]


PHY - 41

EG

PROF. SALAH HASHEM SALAH

03:20

:

04:00

[email protected]

BASALT ROCK AS TEMPERATURE REDUCER IN CEMENT MANUFACTURE M. Y. Hassaana , E. A. Kishar , D. A. Ahmed , S.H. SALAHa a Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt. Chemistry department, University College for Girl's , Ain Shams University,Cairo, Chemistry department, University College for Girl's , Ain Shams University,Cairo, a Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

ABSTRACT Cement clinker raw mixture was prepared according to the composition: 85 wt% limestone + 12 wt% basalt rock + 3 wt% Fe2O3. The mixture was divided into five portions. Each portion was put in a platinum crucible and introduced into a furnace at temperature 1250, 1300, 1350, 1400 and 1450

C respectively. The produced clinkers were ground and measured using X-ray

diffraction, Mössbauer spectroscopy and chemical analysis for the free lime content determination in order to estimate the quality of the produced clinker. The data exhibited that the 1300 C is quite enough to produce good Portland cement clinker not 1450 C. This result means that using basalt rock in cement industry saves about 150 C when it replaces clay in cement manufacture which is economically good.


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 2 )

PHY - 10

EG


09:30

:

09:45

[email protected]

MAGNETIC, ELECTRICAL AND OPTICAL PROPERTIES OF THE DILUTED MAGNETIC SEMICONDUCTORS INTE1-X(SE1-X) FEX(COX Prof. K. El-Sayed , Prof. K. Sedeek , Prof. Z.K. Heiba , Dr. H.H. Hantour

ABSTRACT The binary InSe and InTe were detected as diamagnetic materials. Transformation of the diamagnetic to the ferromagnetic character as the 3d elements (Fe,Co) were incorporated was confirmed. High Curie temperatures of 783K and 870K were detected respectively for InTe0.9Fe0.1 and InSe0.9Fe0.1. A property that allowed these III-VI systems to be used in spintronic devices operated at the ambient temperatures. The InTe0.9(Se0.9)Co0.1 systems indicates that more than one magnetic transition takes place with two different Neel temperatures. The data obtained from DC conductivity for InTe system argue hopping conduction between or inside the impurity bands situated in the forbidden gap. The formation of the second phase in addition to the presence of the stacking faults and the strained lattice may enhance impurity conduction. At 298

T

413, the measured conductivity ( ) increases

with temperature. Over this range, the InTe0.9Fe0.1 has a ferromagnetic phase of high spin ordered electrons. At T > 413K,

decreases since the ordered spin electrons started to decrease

due to the randomness of ions as approaching the blocking temperature (TB). For InSe system, Correlation with the ferromagnetic and antiferromagnetic character of InSe0.9Fe0.1 and InSe0.9Co0.1 was considered in discussing the conductivity data. The data obtained from optical properties indicate that the systems under study have optical band gap (Eg) values smaller than other published data. The presence of band tails was attributed to intrinsic defects such as grain boundaries vacancies, stacking faults.


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 3 )

PHY - 13

EG

PROF. ELBIALY SHAISHA


STRUCTURE, ELECTRICAL AND THERMAL PROPERTIES OF SOME HEAVY METAL OXIDE GLASSES FREE AND DOPED WITH YB2O3 AND ER2O3 RARE EARTH , Mahmoud El-Hady

ABSTRACT In the present work a glass system of mole composition [50 B2O3 +30Bi2O3 +20K2O] and [50 B2O3 +30Bi2O3 +18K2O + (2-x) Yb2O3+xEr2O3], where x=0, 0.5, 1, 1.5 and 2 mol% have been prepared using conventional quenching technique. The starting used materials of high purity (99.995%) were mixed together and melted in porclain crucibles at 1000 oC in an electricallyheated furnace in the air atmosphere. The glassy nature of the samples was checked by XRD and DTA. The density of the glassy samples were measured by Archimedes method with carbon tetrachloride as an immersion medium. The results of density measurements showed an increase of its values with adding Er2O3 up to 1mol% and then decreased. DTA parameters (Tg, T0, Tp,

T) were calculated. The doping of Er2O3 and Yb2O3 are significantly affecting the

thermal properties of the glass. The temperature dependence of the DC conductivity was measured by means of two- probe method and the results showed two mechanisms of conduction and activation energies have been determined in the high temperature range. The conductivity was found to decrease and the activation energy increase with increasing Er2O3 content up to1 mol%. The results were discussed in terms of the theories of the charge carriers and conduction mechanisms.


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 4 )

PHY - 16

EG

PROF. IBRAHIM SHALTOUT

10:00

:

10:15

[email protected]

ER3+ AND YB3+ DOPING EFFECTS ON THE OPTICAL AND STRUCTURAL PROPERTIES OF [B2O3 - BI2O3 -K2O] GLASSES I.Shaltout , E..E.Shaisha

ABSTRACT Er3+ and Yb3+ doping effects on the optical and structural properties of [B2O3 - Bi2O3 -K2O] glasses I.Shaltout M.M.El Hady and E..E.Shaisha Department of Physics, Faculty of Science, Al Azhar University, Nasr City 11884,Cairo, Egypt Absorption and reflection spectra as well as IR spectra of glass system of the composition [50 B2O3 +30Bi2O3 +20K2O] and [50 B2O3 +30Bi2O3 +18K2O %+ (2-x) Yb2O3+xEr2O3], mol%, where x=0, 0.5, 1, 1.5 and 2 mol% , have been measured and discussed in the present work. Optical band gap Eopt was found between 1.9 and 2.9 eV and band tails width Er were found in the range 0.16 to 0.95eV. Indirect allowed transitions have been adopted as the absorption mechanism and Eopt was strongly increasing with the increase of Er2O3 content up to 1mol% and then decreases. Er was found maximum and Eopt was minimum for the sample singly doped with 2 mol% of Yb2O3 (free of Er2O3). Absorption processes of the rare earth ions, Er3+ and Yb3+ , have been observed at ~ 487,523, 550, 652, 799, and 977 nm and were assigned to the Er3+ ions 4F7/2, 2H11/2, 4S3/2, 4F9/2, 4I9/2, 4I11/2 transitions from the 4I15/2 ground state, respectively, and to Yb3+ ions 2F7/2 2F5/2 transitions as well. Assignments of the IR spectra have been discussed with the help of Gaussian deconvolution. Theoretical calculations results showed the presence of BO33-, B2O54-, B3O75-, B3O63- species, the structural units of the planer configuration of B2O54-, cyclic B3O63- and BO3 triangles. The structural units of cyclic B3O63- anions and the composition dependence showed significant effe


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 5 )

PHY - 53

EG

PROF. AHMED MAHOUD

10:15

:

10:30

[email protected]

PLASMA ARC DISCHARGE AS A NEW METAL WORKING METHOD A.M. Youssef , A.M.Mohamed Thebes Higher Institute of Engineering, Cairo Faculty of Engineering, Egyptian Russian University, BADR City

ABSTRACT The represented work is devoted for description of the basic parameters affecting the production of plasma arc discharges .the application of arc plasmatron characteristic features are presented, and accordingly different constructions are documented. The new and developed classification of different constructions of plasma arc discharges are introduced. The represented work explain the capability of using a develop construction of such plasmatron as anew metal working method


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WED : 24-03-2010

HALL[A]

ORAL - SEC16 ( 6 )

PHY - 29

EG

DR. AHMED ELDIB

10:30

:

10:45

[email protected]

MONTE CARLO AND DOSIMETRIC MEASUREMENT OF MODULATED ELECTRON RADIOTHERAPY Mohamed I. ELGohary , Ahmed A. Eldib , Charlie MA Department of physics -Faculty of science -ALAzhar university Department of physics -Faculty of science -ALAzhar university Fox Chase Cancer center -USA

ABSTRACT Modulated electron radiation therapy (MERT) utilizes multiple beams of different energies which are intensity modulated to deliver optimized dose distribution. This technique is a promising modality and could be an aid for a big majority of patients either to treat or improve their quality of life. In the present work, the investigation of the feasibility of a prototype electron

multi-leaf

collimator

(eMLC)

for

MERT

was

performed.

Thus

the

general

characteristics of the prototype and its adequacy for fixed-beam therapy were studied. In order to insure the accuracy of dose calculation, accurate modeling of detailed geometry of the eMLC in addition to other components in the accelerator treatment head was done. The eMLC was accurately simulated by Monte Carlo approach. Dose calculation for the inverse planning system was also verified. An inhouse Monte Carlo based treatment planning system was used to generate MERT treatment plans. The plans were optimized based on 3D computerized tomography images. The obtained results showed that the prototype eMLC mounted on the treatment head can provide adequate beam collimation for the MERT. The good agreement of measurement and simulation results indicated that Monte Carlo simulation is capable of accurately modeling the electron beam delivered by the eMLC.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 2 )

PHY - 30

EG

DR. FATMA MAHROUS

11:30

:

11:45

[email protected]

ELECTRONIC STATES AND SPECTROSCOPIC PROPERTIES OF TIN (II) MOLECULES O.Z.Nagy , M. M. Mossad , N. M. El_Siragy , Fatma El_Sayed Kafrelshiekh University, Kafr El-Shiekh, Egypt. Kafrelshiekh Univ., Kafr El-Shiekh, Egypt. Tanta University, Tanta, Egypt Kafrelshiekh University, Kafr El-Shiekh, Egypt.

ABSTRACT Electronic structure and spectroscopy of Tin (II) molecules, SnX2, X= F, Cl, Br, I have been investigated by performing Hartree-Fock, Coupled-Cluster (CC), Density Functional Theory (DFT), Many-Body Perturbation Theory (MP2) and Configuration-Interaction (CI) methods. In this article, Potential Energy Curves (PECs) of the ground state of each molecule, the total energies, dipole moments, and Electric Field Gradient (EFG) are computed using GAMESS (General Atomic and Molecular Electronic Structure Systems) code. We investigated the influence of relativity on the total energies, dipole moments, and electric field gradient of SnX¬2 molecules. Moreover, excited states of multiplicity (S =1, 3) and their dipole moments and lifetimes are also calculated.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 3 )

PHY - 34

EG

DR. KAMAL ALY

11:45

:

12:00

[email protected]

OPTICAL BAND GAP AND REFRACTIVE INDEX DISPERSION PARAMETERS OF INSE-TE AMORPHOUS FILMS K.A. Aly , N. Afify , A.M. Aboushly , A. M. Abd ElNaiem Lict. Phys. Dept., Faculty of Science, Al-Azhr Univ. (Assiut branch), Assiut, Egypt Prof. of Solid State phys., Phys. Dept., Faculty of Science, Assiut Univ., Assiut, Egypt Prof. of Solid State phys., Phys. Dept., Faculty of Science, Al-Azhr Univ. (Assiut branch), Assiut, Egypt Asistant Lict. Phys. Dept., Faculty of Science, Al-Azhr Univ. (Assiut branch), Assiut, Egypt

ABSTRACT Amorphous InxSe75Te25-x thin films with (0

x

10 at. %) were deposited onto glass

substrates by using thermal evaporation method. The transmission spectra T( ) of the films at normal incidence were measured in the wavelength range 400-2500 nm. A straightforward analysis proposed by Swanepoel, based on the use of the maxima and minima of the interference fringes has been used to drive the film thickness, d, the complex index of refraction, n, and the extinction coefficient, k. The dispersion of the refractive index is discussed in terms of the single-oscillator Wemple and DiDomenico model (WDD). Increasing In content is found to affect the refractive index and the extinction coefficient of the InxSe75Te25-x films. With increasing In content the optical band gap decreases while the refractive index increases. The optical absorption is due to allowed non-direct transition. The chemical bond approach has been applied successfully to interpret the increase of the optical gap with increasing In content.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 4 )

12:00 : 12:15

PHY - 35

EG

PROF. OSAMA MOHAMED HEMEDA

[email protected]

EFFECT OF TRANSITION IONS SUBSTITUTION ON THE PHYSICAL PROPERTIES OF DY3 FE5O12 GARNET FERRITE Dalal.M.Hemeda , Abdel-Raoof Tawfik , Osama.M.Hemeda , Sally .Dewidar Faculty of Science, Tanta University, Egypt Faculty of Science, Tanta University, Egypt Faculty of Science, Tanta University, Egypt Faculty of Science, Tanta University, Egypt

ABSTRACT Polycrystalline ganet ferrites Dy3-xNixFe5O12 where (x=0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) have been prepared by the standard ceramic technique and their crystalline structure were identified by X-ray diffraction and IR spectroscopy. The differential thermal analysis (DTA) reveals two peaks. It is observed that an endothermic peak between 587 and 498 K for all samples which is due to the magnetic phase change from ferrimagnetic to paramagnetic state. The exothermic peak at about 700k may be attributed to the crystallization of Dy3-xNixFe5O12 with garnet structure. DC electrical resistivity, thermoelectric power, charge carrier concentration and charge carrier mobility have been studied at different temperatures: It was found that the DC electrical

conductivity

increases

linearly

with

increasing

temperature

ensuring

the

semiconducting nature of samples. The values of the thermoelectric power were negative for samples of 0.0 < x< 0.4 indicating that the majority of the charge carrier are electrons in these samples while it were positive for sample of x = 0.5 at room temperature, and negative at high temperature. Using the values of the DC electrical conductivity and thermoelectric power, the values of the charge carrier concentration and the charge carrier mobility were calculated. Finally thermal properties have been studied.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 5 )

PHY - 38

EG

MS. ABEER NESSAR

12:15

:

12:30

[email protected]

POSITRON ANNIHILATION LIFETIME SPECTROSCOPY AND TRANSPORT PROPERTIES OF NANO-POROUS RF AEROGEL COMPOSITE WITH NANO PARTICLES OF COFE2O4 S.M. Attia , A.R. Nessar , T.M. Sharshar , A. Tawfik Faculty of Science, Kafrelshiekh University Faculty of Science, Kafrelshiekh University Faculty of Science, Kafrelshiekh University Faculty of Science, Tanta University.

ABSTRACT Series of resorcinol formaldehyde (RF) aerogel samples were prepared by sol-gel method at different concentration of Na2CO3 as catalyst (0.02%wt, 0.025%wt, 0.03%wt, and 0.04%wt). Another series of RF aerogel composite with nano particles of cobalt ferrite, CoFe2O4 were prepared by sol-gel and precipitation method respectively. Size of the nano pores were determined by Positron Annihilation Lifetime Spectroscopy (PALS). DC conductivity, measured by two probe method, while AC conductivity, tangent tan

AC, dielectric constant

DC, was

', and loss

were measured at room temperature in the frequency range 50-5MHz using RLC

bridge. Two types of pore size were determined for each sample the first R1 ranges from 0.19 to 0.25 nm, and the second R2 ranges from 0.32 to 0.45 nm. For pure RF aerogel ' decreases with increasing frequency and increases with increase of CoFe2O4 nano particle concentration.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 6 )

PHY - 44

EG

ASSOC.PROF. MOFIDA EISSA


STUDY OF THE NATURE OF RADIATION EMITTED FROM MOBILE PHONE M.W.Eissa Protection Department,Nuclear Research Center,AEA, Cairo ,Egypt

ABSTRACT The emitted radiation from the mobile phone cells were mesured using law back ground gama spectroscopic system(multichanell analyzer attached to hyper pure germanium crystal) The mobile phone radiations at different states (sending and receiving calls, and also without calling i.e. during only)were studied using different line of network systems (Mobinil,Vodaphone and Etsalat). The radiation from different mobile type were mesured during ring using Vodaphone line. The results prove that the mobile phones emit electro magnetic radiation in the form of bands These bands have energies range from(66.6-2250KeV) i.e.the emitted radiation has energies within the range of X-ray and ionising radiation energies. The energies and the intensity of these radiation depend on (network,type of mobile,receive ring ,send ringand receive call or send call).These study demonstrate the hazards resulting from mobile phone use.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 7 )

PHY - 57

EG

PROF. AHMED MAHOUD

12:45

:

01:00

[email protected]

ON THE STUDY OF PLASMA DISTRUPUTIVE INSTABILLTY ON TOKAMAK A.M. Youssef Thebes Higher Institute of Engineering, Cairo

ABSTRACT Some experiments were carried out under ohmic heating condition to investigat temporal and radial distributions in Tokamak plasma during disruption of plasma column. The experiment was performed in hydrogen plasma with magnetic field of 19 KG, plasma current of 39 KA and voltage of 8 V. The plasma paramters have been measured and studied as a function of Zeff, energy and life time. The analyses are based on the assumption that an electric field is induced, at the time of reconnection of filed lines, which accelerates charged particjes and cause the appearance of tails on the distribution function of plasma components.


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WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 8 )

PHY - 32

EG

MR. KARAM ADLY

01:00

:

01:15

[email protected]

EFFECTS OF UV-IRRADIATION ON MECHANICAL AND ELECTRICAL PROPERTIES OF POLY (VINYL ACETATE) / POLY (METHYL METHACRYALATE ) (PVAC/PMMA) BLENDS. M.M. Elokr , M.Y. Elashery , S.A. Mansour , M. H. Ibrahim , K. Adly Physics Department, Faculty of Science, Al-Azhar University, Cairo, Egypt Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt Physics Department, Faculty of Science, Suez Canal University, Ismailia, Egypt

ABSTRACT Poly (vinyl acetate) (PVAc) – Poly (methyl methacryalate) (PMMA) blends of different composition have been prepared by solution casting technique. The miscibility of the blends was studied using Differential Scanning Calorimetery (DSC). The permittivity

' and dielectric

loss ( ") have been measured at room temperature over the frequency range (104Hz–106MHz). The effect of blend ratio on ac conductivity has been investigated. It was found that both

'

and ( ") decrease with the increase of frequency and increasing with temperature. The effect of blend ratio and UV-irradiation on the mechanical properties such as tensile strength, elongation at break, yield point, Strain hardening, stress-strain behavior and hardness has been investigated.


.. .:: ::. ..



WED : 24-03-2010

HALL[A]

ORAL - SEC21 ( 9 )

01:15 : 01:30

PHY - 45

EG

DR. MAHMOUD TAMMAM

[email protected]

CONTRIBUTION OF ROPER RESONANCE TO THE STRUCTURE FUNCTIONS FOR D (E, 0E )NP REACTION Mahmoud Tammam

ABSTRACT The well known spectator model is used to study the contribution of P11(1440) (Roper) resonance to the structure functions for the neutral pion electroproduction from the deuteron. The amplitude for the elementary reaction * N

N is taken from MAID2003 model. The effect

of the final state interaction for the subsystem NN and

N are included. Two values for the four

momentum transferred Q2 are used. A significant effect of the Roper resonance on the structure functions is found.

Chemistry and its applications


.. .:: ::. ..


Chemistry and its applications 128 286

TUE : 23-03-2010

HALL[B]

ORAL - SEC02 ( 2 )

CHEM - 35

EG

DR. ABEER ELSHERBINY

09:30

:

09:45

[email protected]

CATALYTIC ACTIVITY OF AZO DYE BASED ON NEW METAL-ORGANIC FRAMEWORK COMPOUNDS Dr. Abeer Salah Eldeen Elsherbiny , Prof. Dr. Safaa El-Din Ataiw , Dr. Ahmed Badreldin Lecturer of Physical Chemistry, Faculty of Science, Tanta University Professor of Physical and Inorganic Chemistry, Faculty of Science, Tanta University Lecturer of Inorganic Chemistry, Faculty of Science, Tanta University

ABSTRACT Reactions of Ph3SnCl/K[Cu(CN)2] with the bipodal nitrogen bases (L); pyrazine (pyz), methylpyrazine (mepyz), 4,4'-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethene (tbpe) and 1,2-bis (4-pyridyl)ethane (bpe) afford the new metal-organic frameworks (MOFs) of the general composition [Ph3SnCu(CN)2.L], 1-5. The products were characterized by elemental analysis, Xray powder diffraction, thermogravimetric analysis and IR, mass, NMR, UV-visible, and emission spectra. These compounds are strong fluorescent in the solid state. These metalorganic frameworks were found to have catalytic activity for the degradation of azo dyes. The kinetics of oxidative degradation of Metanil Yellow (as example for azo dye) with H2O2 in the presence of product 4 (as a catalyst) has been investigated. The rate of degradation enhanced with increasing the H2O2, catalyst concentration and temperature. It was decreased with the increase the initial dye concentration.


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TUE : 23-03-2010

HALL[B]

ORAL - SEC02 ( 3 )

CHEM - 41

LY

PROF. MOHAMED EL-HAMOULY

09:45

:

10:00

[email protected]

SOME CHEMICAL CHARACTERACTION OF TUBROUK CITY ( LIBYA ) COAST SEDIMENT Hamad M. I. Hasan Chemistry Department,Faculity of Science, Omar Al-mukhtar University, Libya

ABSTRACT The concentrations of organic matter , total phosphorus and some heavy metals ( Fe, Zn, Co, Cd, Pb, and Mn) for some sediment samples collected from different areas on Tobrouk city ( Libya ) coast were determined . The concentration of heavy metals are within the ranges of : (753.27 – 2354.52 ), ( 7.5 – 87.32 ), ( 5 – 12 ), ( 0.06 – 0.91 ), ( 36.04 – 133.65 ) and ( 0.291 – 9.74 my/g ) for Fe, Zn, Co, Cd, Pb, and Mn respectively , while the contents of total phosphorus ( Tp ) and organic matter were fluctuated in the ranges of ( 4.65 – 13.95 mg/kg ), and ( 2.08 – 4.78% ), respectively . The data obtained that , the high levels of studied parameters were found at areas which received different types of pollutants .


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC02 ( 4 )

CHEM - 42

LY


10:00

:

10:15

[email protected]

BIOCHEMICAL INVESTIGATION OF REDUCING POWER OF SOME PLANTS RELATIVE TO ASCORBIC AND/OR TANNIC ACIDS Mohamed M.A.El-Hamouly , Habib I.H.I., , Hamad M.I. Hasan , Sania Mohamed Eisawy , Mahmoud M.A.El-Hamouly Dept.of Pharmacognosy, Faculties of Pharmacy, Al-Azhar , Nasr City,Cairo, Egypt Omar Al-Mukhtar, Libya, Universities

ABSTRACT Plants everywhere produce various metabolites, start from glucose. A lot of those metabolites have anti-oxidant activities, which face a lot of researches worldwide due to their biological importance. Ascorbic acid, is known as a natural anti-oxidant standard. Also, Phenolics including tanninic acid have strong reducing power, through proton donation. The relative reducing power of some plants relative to Ascorbic and tanninc acids were tested. Also, total phenolic contents of plant samples under investigation, were determined. Some plants collected from Libya were investigated including: Rosemary (leaves and flowers from Al-Baidaa and Musrata, December samples), Artemisia herba alba overground herb and roots, Arbutus pavari (leaves, fruits and flowers), Urtica dioica(leaves, stems, roots, flowers and/or fruits), Myoporum acuminatum(leaves, December), Olea europoea var.oleaster(leaves and fruits of cultivated and four wild samples, October), Pinus species(leaves, December), Punica granatum fruit rend, and many others.


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC02 ( 5 )

CHEM - 47

LY


10:15

:

10:30

[email protected]

DIRECT ALCOHOLIC EXTRACTS OF SOME PLANT DRUGS AND THEIR ANTIMICROBIAL ACTIVITIES Sania M.Eisawy , Amal E. Saafan , Mahmoud M.M.El-Hamouly Departments of Chemistry Microbiology Internal Medicine

ABSTRACT Direct alcoholic extracts of some plants including Artemisia herba alba L.herb and its volatile oil, Urtica dioica leaves, Urtica urens leaves cultivated olive leaves, two plants of wild olive leaves collected from two different areas, Myoporum acuminatum R.Br. leaves, green tea leaves and Lepton black tea leaves was done. Antimicrobial activities of their direct alcoholic extracts were done and showed that Artemisia herba alba herb and oil, green and black tea are the most antifungal activity. Most of the plants showed antimicrobial activities.


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 2 )

CHEM - 4

EG

PROF. MOSTAFA EMARA


KINETICS OF THE DEGRADATION OF HYDROQUINONE (HQ) UNDER WIDE PHOTO –CATALYTIC CONDITIONS M. Emara , M. M. Elmorsy , M. M. El moselhy , Farahat, N.S. Scdreh, Al-Azhar University, Cairo, Egypt Faculty of Science, Al-Azhar University, Cairo, Egypt Faculty of Science, Al-Azhar University, Cairo, Egypt

ABSTRACT It is assumed that the Kinetics of the degradation of HQ under all photo –catalytic conditions ; namely in presence of uv ,uv &H2O2 , uv& Fe2, Fenton , photo- Fenton condition and other modified catalytic conditions ; that OH radicals are involved in the process . Based on this fact and first order or pseudo first order kinetics a rate equation was derived which relates the concentrations involved to the time of the degradation. All experimental data fitted to this equation and apparent rate constant kobs was obtained. The effect of the various experimental conditions on the kobs was studied and reported. When kobs was plotted against concentration species [HQ], [H2O2], [Fe2t] or their mixtures, the obtained results indicated that kobs decreased As [HQ] increased from 50 ppm to 300 ppm . However, it was found that kobs increased as the concentrations of [H2O2], [Fe 2+] or their mixtures respectively increased then remained constant at higher concentrations. On the other hand, it was found that kobs decreased as the pH of aqueous 300 ppm HQ increased with time of degradation process (0300) minutes. All the above obtained results and the different observed behaviors observed were explained within the already suggested processes and also through possible specific pathways depending on each specific photo catalytic condition .It can also safely be said that there is no specific one single mechanism or pathway by which degradation process of HQ can be proposed as common for all conditions under investigation.


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 3 )

CHEM - 21

EG

PROF. MOHSEN EL-SABBAH

11:15

:

11:30

[email protected]

CORROSION OF AL-ELECTRODE IN BUFFER SOLUTIONS IN ABSENCE AND IN PRESENCE OF ANTHRAQUINONE AND AZO DYES M. M. B. El-Sabbah , M. S. Aboul-Fetauh , A. M. Nagiub , H. F. Y. Khalil Chemistry Department, Faculty of Science Al-Azhar University Chemistry Department, Faculty of Science Al-Azhar University Chemistry Department, Faculty of Science Al-Azhar University Chemistry Department, Faculty of Science Al-Azhar University

ABSTRACT Corrosion of Al-Electrode in universal buffer solutions in absence and in presence of anthraquinone and azo dyes has been investigated by using open circuit potential, and potentiodynamic techniques. For the dyes tested in the present study, the order of decrease the rate of oxide film thickening follows the following order of the used dyes; Azo dyes > anthraquinone dye. All of the dyes are found to act predominantly on cathodic sites and are partially effective on anodic sites. According to the theoretical prediction anthraquinone and azo dyes can exist in different forms in pH ranges of (2.4-12.4).


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 4 )

CHEM - 57

EG

PROF. HASSAN ABD EL BARY

11:30

:

11:45

[email protected]

TREATMENT OF AQUEOUS SOLUTION CONTAMINATED WITH AZO DYE USING HYDROGEN PEROXIDE AND IRON POWDER IN PRESENCE OF UV LIGHT Taha Mahmoud Elmorsi , Yasser Mohamed Riyad , Zeinhom Hosny Mohamed , Hassan Mohamed Hassan Abd El Bary , Mohamed A. Barakat Chemistry Department, Faculty of Science, Jazan University, Jazan, 706, KSA Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Cairo, Egypt Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Cairo, Egypt Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Cairo, Egypt Central Metallurgical R&D Institut (CMRDI), P.O.Box 87, Helwan 11421, Cairo, Egypt

ABSTRACT Homogeneous and heterogeneous photocatalysis are methods aim at the destruction of organic pollutants in wastewater at ambient temperature and pressure. Presence of pollutants such as azo dyes in wastewater is of particular environmental concern since they can originate toxic byproducts in the environment . In this study different treatment methods such as H2O2/UV, Fenton (Fe+n/H2O2) and photo-Fenton (Fe+n/H2O2/UV) treatments, have been used to investigate the removal of the Mordant red 7 (MR7) azo dye from aqueous solution. In photoFenton treatment, iron (Fe) powder was used as a cheap source of Fe2+ ions. Complete decolorization of MR7 using H2O2/UV process, under optimum conditions, required only a period of time less than 60 min. It was found that different parameters such as initial dye concentrations, H2O2 concentration and pH were mainly affecting the photodegradation process. In addition, presence of different inorganic salts such as chloride ion led to large decrease in the degradation percent of MR 7. In the same time, nitrate and carbonate ions slightly decrease the degradation rate. In comparison, the photo-Fenton treatment, using Fe powder as a source of Fe2+ ions, was more efficient in the decolorization of MR7. It was found that complete decolorization of MR 7 obtained in about 30 min. Furthermore, mineralization of MR 7 was investigated using chemical oxygen demand (COD) experiment. The results indicated that, 66.7% of the MR 7dye was mineralized using H2O2/UV process while in a 3.0 h photoperiod. While the same photoperiod (3.0 h) results in 100% mineralization using photoFenton treatment.


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 5 )

CHEM - 58

EG

ASSOC.PROF. ABD EL-LATIF MOHAMMED

11:45 :

12:00

[email protected]

EVALUATION AND APPLICATION OF SURFACTANTS SYNTHESIZED FROM ASPHALT COMPONENTS Souaya, E. M. , El-kholy, S.A , A.M., Abd El-Rahman , El-Shafie, M.A. , Abo- Shanab, Z.L. Faculty of Science, Ain Shams University, Elabassia, Cairo, Egypt. Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt. Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt. Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt. Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt.

ABSTRACT The synthesis, characterization, surface activity and potential applications of ethoxylated surfactants derived from bitumen components (maltenes) are presented. The new tensoactive compounds were synthesized by the sulfonation of a starting material (maltene), then the prepared maltene sulfonic acid reacted with hexadecylamine giving a sulfonamide product which undergoes an alkali-catalyzed ethoxylation reaction at (135-150ºC, 20-60 psi). Several surfactants were formed with different ethylene oxide units (from 10 up to 40) and the products were characterized by molecular weight determinations, elemental analysis, FTI.R. and 1HNMR. Surface tension, as a function of concentration of the surfactants in the aqueous media, was measured at 25ºC using the drop volume tensiometer. From these measurements, the critical micelle concentration (CMC), the maximum surface excess concentration ( max), Minimum area per molecule (Amin), effectiveness of surface reduction and the efficiency (Pc20) were calculated. The prepared surfactants were applied as stabilizing agents for bitumen emulsion. Storage stability, (Saybolt Furol) viscosity, settlement water content difference and specific gravity of bitumen emulsion were measured. The results indicated that M-40 (Sulfonamide maltene ethoxylated with 40 unit ethylene oxides) gives a maximum stability.


.. .:: ::. ..



TUE : 23-03-2010

HALL[B]

ORAL - SEC07 ( 6 )

CHEM - 61

EG

MR. HOSSAM ARAM

12:00

:

12:15

[email protected]

STABILITY INDICATING HPLC METHOD FOR THE DETERMINATION OF MELOXICAM, PIROXICAM AND LORNOXICAM IN BULK AND COMMERCIAL FORMULATIONS Prof.Dr. Ali M. A.Hassan , Hossam A. M.Aram Faculty of Science, Al-Azhar University, Cairo, Egypt Master Student, Faculty of Science, Al-Azhar University, Cairo, Egypt

ABSTRACT A simple and sensitive precise and cost effective high performance liquid chromatography method using UV detection (HPLC-UV) for the determination of meloxicam, piroxicam and lornoxicam in bulk and commercial formulations was developed and validated using tenoxicam as internal standard.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 1

EG

DR. HAMADA MOHAMED

03:00

:

03:25

[email protected]

PREPARATION AND CHARACTERISATION OF INK FORMULATIONS BASED ON SOD.ALGINATE AND NATROSOL AS THICKENERS FOR JET PRINTING ON NYLON CARPET H. Abd El-Wahab , Changlongsun , L. Lin , M.M. El-Molla Department of Chemistry, Faculty of Science, Al-azhr University, Egypt Department of Colour and Polymer Chemistry, School of Chemistry, University of Leeds, Leeds LS2 9JT, UK Department of Colour and Polymer Chemistry, School of Chemistry, University of Leeds, Leeds LS2 9JT, UK Textile Research Division, National Research Centre, Dokki, Cairo, Egypt

ABSTRACT To prepare and characterise various ink formulations for inkjet printing on nylon 66 carpet. Various ink formulations were prepared using CI Acid Red 57, synthetic thickeners (Natrosol 2%gel, Sod.Alginat3%gel), ethylene glycol, diethylene glycol, isopropanol with auxiliaries. The inks were characterised for their rheological, wetting and storage stability properties. The inks were jetted using a Printos P16 drop-on-demand jet print-head onto nylon 66 carpet materials. The printed images were characterised using an ImageXpert system. It was found that the inks containing the synthetic thickeners at the optimum ratio gave good printing and image properties, such as optical density, drop size, and depth of penetration into the substrate at pH 4-5. The optimised ink formulation was found to have good storage stability. And The study focused on ink formulations based on CI Acid Red 57. Ink formulations based on other colorants could also be studied in order to assess the applicability of the ink formulation system found for other colorants.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 3

LY

DR. ISMAIL TABAN


EVALUATION SOME CATIONIC SURFACTANTS PREPARED FROM OLIVE OIL HAVING ANTIBACTERIAL ACTIVITY Ismail Muftah Taban , Ali Gemeay

ABSTRACT The present work is concerned with the preparation, characterization, and evaluation of some cationic surfactants having surface and biological activities. The starting materials used were the fatty acids differing in alkyl chains lengths were procured from two different sources; the first one was the commercially available fatty acids (Aldrich), the second source was the fatty acids obtained from hydrolysis of locally available olive oil. The cationic surfactant compounds with different head groups such as, pyridiunium chloride, trimethyammoniumm chloride, and triethanolammonium chloride were prepared. The surfactants were characterized by spectral (FT-IR and 1H NMR) and physicochemical properties (surface tension, critical micelles concentration, Kraft point, cloud point, foaming height, wetting power, and emulsification power). Biodegradability and antimicrobial activity were studied for the synthesized cationic surfactants. The biodegradability study of synthesized surfactants showed that they are acceptable cationic surfactants for the environment. All of the synthesized surfactants inhibited the growth of gram negative and gram positive bacteria as well as fungi.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 2

EG

DR. AHMED GAHLAN

03:00

: 03:25

[email protected]

METAL COMPLEXES AND SQUARE WAVE CATHODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LISINOPRIL IN DOSAGE FORMS AND BIOLOGICAL FLUIDS. O. A. Farghaly , A. A. Gahlan , N. A. Mohamed , M. A. El- Mottaleb Chemistry Department, Faculty of Science, Al-Azhar University, Assiut branch, 71524- Assiut, Egypt. Chemistry Department, Faculty of Science, Al-Azhar University, Assiut branch, 71524- Assiut, Egypt. Faculty of Pharmacy, Analytical Chemistry, Assiut University, Assiut, Egypt. Chemistry Department, Faculty of Science, Al-Azhar University, Assiut branch, 71524- Assiut, Egypt.

ABSTRACT Six metal ions viz; Iron(III), Aluminum(III), Chromium(III), Lanthanum(III), Yttrium(III) and Thorium(IV) were selected to elucidate the interaction of these metal ions with lisinopril using potentiometric method. The protonation constant of the ligand and stability constants of complexes formed have been tabulated at ionic strength I = 0.1M NaNO3 in aqueous solutions at 25 C ± 0.1. Complexes of 1: 1, 1:2 and /or 1: 3 metal to ligand ratios are formed depending on the nature of the ligand or metal ions. The order of stability constants of the binary complexes was examined. The voltammetric behavior of lisinopril was studied using square wave cathodic stripping voltammetric method at carbon paste electrode (CPE) in pharmaceutical dosage forms (Zestril® tablet ) and in biological fluids (spiked and real urine sample ) from healthy volunteers has been developed and evaluated. Different parameters such as medium, pH, accumulation potential, scan rate, accumulation time and ionic strength were tested to optimum condition to optimize the conditions for the determination of Lisinopril. The adsorbed form is reduced irreversible at optimal conditions viz; 0.08 M Britton-Robinson buffers (pH = 9.00). Linear concentration ranges from 3.53 – 44.17 ng/mL at accumulation times 15, 30 and 2.64 - 44.17 ng/ mL at 60 s respectively, can be determined successfully. The standard addition method was used to determine Lisinopril in pure solutions, tablets and in biological fluids with satisfactory results .The data obtained are compared with standard official method


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MON : 22-03-2010

HALL[POSTER]


CHEM - 5

EG

ASSOC.PROF. AISHA HASSAN


UTILITY OF -TETRALONE IN SYNTHESIS OF BENZIMIDAZOLES, BENZOTRIAZOLE, INDOLE DERIVATIVES AND FUSED TRICYCLIC RING SYSTEMS WITH BIOLOGICAL INTEREST Aisha Yousif Hassan

ABSTRACT It was of interest to prepare new benzimidazoles 6,7 and the structurally related benzotriazole 5 carrying in the 1-position of tetrahydronaphthalene. Indole derivative 9 was obtained by Fisher – indole cyclization on the phenylhydrazone derivative 8. Dihydro-phenanthrene derivatives 11,12a,b, 13a,b, 14, 15, dihydroisochromene derivatives 16a,b, 17, dihydroisothiachromene derivative 18 and dihydrobenzoisoquinoline derivatives 19a,b were synthesized by reacting 1dicyanomethylene-1,2,3,4-tetrahydronaphthalene 10 with active halo-compound, active nitriles, arylidene activated nitrile, aldehydes, carbon disulfide and isothiocyanate derivatives. Further evaluation of the cytotoxicity of compounds in vitro toward EAC and HPG2 tumor cells. The structure activity relationship of the compound is also discussed.


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MON : 22-03-2010

HALL[POSTER]


03:00 : 03:25

CHEM - 6

LY

DR. ABDULKAREEM HAMID

[email protected]

SYNTHESIS OF ISOLUOTONINE IN TWO STEPS FORM SYNTHESIZED PYRROLOQUINOLINES Abdulkareem Hamid Department of Chemistry, Faculty of Science, University of Al Gabal Al Gardie, Gharian, Libya;

ABSTRACT we have developed numerous methods including of particular: 1°- the transformation of azacyclic vicinal diols into corresponding tetramic1 acids according to an original pinacolic `type'

transposition

in

acidic

media,

and

2°-

the

synthesis

of

polysubstituted2,

3

pyrroloquinolines from corresponding hydrazones in one step by cleavage of N-N linkage and total reduction4 of the C=O function in the same time using SnCl2/AcOH combination. Also, we showed clearly that one of the two carbonyls of the imide function is reduced completely before the cyclocondensation5 between the amine function, generated in situ, and the carbonyl of lactam derived from imide.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 33

EG

PROF. MOHAMMAD GHAMRY


IMPROVEMENT OF CHROME TAN EXHAUSTION AND FIXATION IN TANNING PROCESSES M.F. El-Hadi , M.S. Metwally , M.S. Abou-El Fetouh , N.H. El-Sayed Khamis , El-Shahat H.A. Nashy Chemistry Department, Faculty of Science, Al-Azhar University- Cairo(EGYPT) Chemistry Department, Faculty of Science, Al-Azhar University- Cairo(EGYPT) Chemistry Department, Faculty of Science, Al-Azhar University- Cairo(EGYPT) National Research Center National Research Center Chemistry Department, Faculty of Science, Al-Azhar University- Cairo(EGYPT)

ABSTRACT Leather is a unique material unmatched in properties by synthetics. Leather making is an environmentally challenged process. Tanning is the key process that renders stability to the skin matrix against microbial degradation, heat, sweat etc. Chromium III has been used widely in tanning for the excellent properties that it renders to the leather along with simplicity of operations. This paper concerned with improvement of chrome tan exhaustion and fixation in tanning processes and studies of some physicochemical properties. The best results obtained in the study are: Chrome fixation 93% and the shrinkage temp. = 120 °C. The chrome concentration 16 g /l for a tanning time 24 hours. Seven temp. are used 25, 27.5, 30, 32, 35, 40 and 45 °C, by using shaking rate 150 rpm with 16 g/l chrome and the initial pH= 8.5 in case of tanning with modification. The tanning time is 8 hours. Chrome tan exhaustion and fixation as well as shrinkage temperature are increased by increasing of chrome concentration due to the increase in the rate of chrome penetration in the hide.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 7

EG

DR. SAYED ABD ELHAMED

03:00

:

03:25

[email protected]

DIMETHYLFORMAMIDE DIMETHYL ACETAL AS A BUILDING BLOCK IN THE SYNTHESIS OF POLYSUBSTITUTED AZINES Fathi A. Abu-Shanab , Sayed A. S. Mousa , Essam A. Eshak , Ahmed Al-Harrasi Department of Chemistry, Faculty of Science Al-Azhar University, Assiut 71524 EGYPT Department of Chemistry, Faculty of Science Al-Azhar University, Assiut 71524 EGYPT Department of Chemistry, Faculty of Science Al-Azhar University, Assiut 71524 EGYPT Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Oman

ABSTRACT Reaction of N,N-dimethylformamide dimethyl acetal (DMFDMA) with malononitrile dimmer 8 (1:1) mole afforded 9 while, this reaction when carried out in (2:1) mole to give amidine 11 which can be used for the preparation of pyrimidine 13, amidine 14 and pyridine 19 when reacted with 4-nitroaniline, 4-methylaniline and alkoxide respectively. Malononitrile dimmer reacted with diazonium chloride to give pyridazine 21, which can be reacted with DMFDMA, AcOH/HCl and cyanoacetamide to give pyridazine 22, 23 and pyrido[4,3-c]pyridazine 24 respectively. The latter reacted with DMFDMA to afford tricyclic compound 25.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 9

EG

ASSOC.PROF. GAMEEL MOHAMED


SYNTHETIC APPROACHES TOWARDS 2-(4-OXO-4,5-DIHYDRO-THIAZOL-2-YL) ACETAMIDE G. A. M. El-Hag Ali , H. A. Eyada , A. Khalil , T. A. Abdel-Aziz1 Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt Chemistry Department, Faculty of Science, Ain Shams Univer -sity, Cairo, Egypt Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt

ABSTRACT 2-(4-Oxo-4,5-dihydro-thiazol-2-yl) acetamide compound (1), was condensed with aromatic aldehydes either (1:1 molar ratio) or (1:2 molar ratio), and gave the newly 4,5-dihydro- 4-oxothiazole derivatives (2a-d), and (3a-c), respectively. Compounds (4a-d) were obtained via cyclocondensation of compound (1), malononitrile, and aromatic aldehydes (1:1:2 molar ratios). Cyclization of compound (2a) with

- substituted cinnamonitriles (6a-d), and (10a-c) yielded the

newly thiazolo [3,2-a] pyridine derivatives (9a-d), and (13a-c), respectively.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 10

EG

PROF. FATMA KAMAL

03:00

:

03:25

[email protected]

THE EFFECT OF RHODAMINE B DYE ON THE DISTRIBUTION COEFFICIENT OF SOME METAL IONS ON DOWEX S. B. R. ANION EXCHANGE RESIN F. H. Kamal , S.M. Al- Rashid , J. M. Al-Ahmari Chem. Department, Faculty of Science (Girls), Al- Azhar University, Cairo, Egypt Chem. Deparment, Girls College of Education, KSA Chem. Department, Girls College of Education, KSA

ABSTRACT This work aims to study the effect of Rhodamine B dye on the distribution coefficient Kd of some metal ions via Ni(II), Co(II), Cu(II) and Cr(III) on anion exchanger; Dowex S. B. R (in the nitrate form). The effect of the volume ratio of metal to dye ion, initial pH, HNO3 concentration and the percentage of ethanol and acetone solvent volume on the Kd – values were investigated to show the importance of such media as a complexing agent. The Kd – values of the metal ions in the presence of the dye were found to increase with increasing the dye percentage according to the following order; Co(II)> Ni(II)> Cu(II)> Cr(III) due to the mobility of these ions inside the risen particle. The distribution coefficient measurement in the presence of RhB dye at fixed concentration was controlled by the acidity, initial pH value and the dielectric constant of the media.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 11

EG

PROF. ABDEL ALEEM ABOUL MAGD


A COMPARISON OF HYDROLYSIS OF N–BUTYL ACETATE USING HETEROGENEOUS VERSUS HOMOGENEOUS ACID CATALYSIS AT THE BOILING POINT OF ESTER IN BINARY WATER–DIOXANE SYSTEM Abdul–Aleem, S. Aboul–Magd , Salwa, M. El–Rashed , Mona, Z.A. Al–Shammary Faculty of Science, Al–Azhar University Department of Chemistry, Cairo, Egypt Faculty of Education, Chemistry Department, King Abdul–Aziz Jeddah, K.S.A Faculty of Education, Chemistry Department, Hail Univ. K.S.A

ABSTRACT In this work, ion exchange resins are efficient catalysts at some extent for the acid hydrolysis of n–butylacetate. The influence of different parameters such as; the amount of catalyst (H+–ion), initial reactant molar ratio and reaction temperature had been investigated. Additionally a comparable the hydrolysis of n–butyl acetate in presence of HCl as a homogeneous catalyst has also been investigated. It was found that the heterogeneous catalysts at the boiling point over 100oC have no significant advance over homogeneous catalyst of ester used. The reaction rate date are correlated with a kinetic model based on pseudo–first order homogeneous type, a kinetic equation for describing the reaction catalyzed by cation exchange resin is developed. It was found that the efficiency of the resin (q) was less than unity at 127oC of reaction point of the used ester, and larger than unity at a moderate temperature and decreased with rise of temperature.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 12

EG

ASSOC.PROF. ZEINAB EL-SHAFIEY


SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION, THERMAL INVESTIGATION AND ANTIMICROBIAL ACTIVITY OF S, O AND N-DONOR HETEROCYCLIC LIGANDS AND THEIR CO(II), CD(II), HG(II), FE(III) AND UO2(II) METAL COMPLEXES. Zeinab El-Shafiey Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt

ABSTRACT Condensation of succinic anhydride with 4-aminoantipyrine; 2-aminothiophenol and 2aminopyridine yields the polydentate ligands 2,5-N,N-bis (dimethyl-1-phenyl-4-pyrazoline-5-one) furanidine; 2,5-N,N-bis (pyridine) furanidine and 2,5-N,N-bis (2-thiophenol) furanidine (L1 – L3), respectively. Co(II) Cd(II), Hg(II), Fe(III) and UO2(II) complexes with these ligands have been prepared. They are characterized using analytical data, IR, 1H-NMR, UV-visible, mass spectroscopy, magnetic susceptibility, thermal analysis and molar conductance measurements. Bonding of the ligands with the metal ions is deduced from IR spectra and the presence of the mononuclear complexes are inferred from the mass spectra study. An octahedral structure is proposed for the prepared metal complexes and some ligand field parameters (Dq, B, and ) in addition to LFSE were calculated. The thermal study of metal complexes is evaluated. All synthesized compounds were screened for their antimicrobial activity against; staphylococcus aureus; Escherichia coli, Bacillus subtilis and pseudomonas aeruginosa (bacteria) and Aspergllus Fumigates, pencillium italicum and candida albicans (Fungi). The biological evalution study showed that the synthesized compounds have broad-spectrum activities and some complexes were found to be comparable with the standards; chloramphenicol and Terbinafin. These results were compared with eleven type of known antibiotics.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 13

EG

ASSOC.PROF. AZZA AHMED


UTILIZATION OF FINE LOW CARBON FERROCHROME A.Ahmed , H.El-Faramawy , S. A. El Badry Steel Technology, Metallurgical Research and Development institute, Helwan, Cairo, Egypt Steel Technology, Metallurgical Research and Development institute, Helwan, Cairo, Egypt Physics department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

ABSTRACT Gas phase nitriding of solid low carbon ferrochrome was investigated. A three level surface response design (Box-Bahnken) was used to study the effects of reaction time, nitriding temperature and pressure of nitrogen gas on the nitrogen content of the nitrided ferrochrome. The generated response surface model showed that the most affected factor in the nitriding process is the temperature also it showed that the temperature has positive effect on increasing the nitrogen content of the alloy while the pressure has negative or positive effect depending on the nitriding time and temperature. The nitrided ferrochrome was characterized using XRD and EDX. XRD showed that (Cr,Fe)N1-x, Cr2N and CrN were formed. The microstructure was also studied using scanning electron microscope. The analysis of the results indicated that the diffusion reaction can be considered as the rate determining step of the solid state nitriding reaction.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 14

EG

ASSOC.PROF. ASRAR GOMA


KINETIC STUDY OF ADSORPTION ACID DYEING ON COTTON WITH CETYL TRIMETHYL AMMONIUM BROMIDE Gamal, A.M , El-Said, A.G. , El-Azabawy, R.E Ass.Prof.of Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt. Ass.Prof.of Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt. lecture of Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt.

ABSTRACT Adsorption kinetics study of two Acid dyeing C.I. Acid red 198, C.I. Acid red 199 on cotton in absence and presence of cationic surfactant cetyl trimethyl ammonium bromide "CTAB" were carried out at pH 3.0, L:R 0.5 : 50 and an initial dye concentration 1.0 x 10–4 mole dm–3 Pseudo first and second order kinetic models were used to examine the adsorption kinetic data. It was found that the adsorption kinetic of two acid dyeing in absence and presence cationic surfactant with pH control was found to follow the pseudo second order kinetic model with an activation energy of C.I Acid Red 198 55.80, 57.65 and 40.04 kJ/mol but on C.I. Acid Red 99 44.28, 48.40 and 16.51kJ/mol. The effect of cationic surfactant on dyeability of cotton fabric with two acid dyes have also been studied at three different temperatures (45, 60, 90ºC). It was observed that the aggregation of surfactant and anionic dyes takes place at surfactant concentrations far below the critical micelle concentration of the individual surfactant


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 15

EG

ASSOC.PROF. AZA GAMAL


SOLVENT ASSISTED DYEING OF ACRYLICS WITH BASIC DYES A.M. Gamal , M.El Batouti , N.F.Al Harby Ass. prof. of physical chemistr, Chemistry Department, Faculty of Science, Al Azhar University (Girls), Chemistry Department, Faculty of Science Alexandria University . Chemistry Department, Faculty of Science and Arts, Al Qassim University.

ABSTRACT Acrylic has an additional problem of difficult dye penetration due to its relatively compact physical structure. Addition of benzyl alcohol may modify the structure of fabrics causing an increase in the dye ability. Using the three basic dyes (C.I. Basic Red 12, C.I. Basic Orange 21, and C.I. Basic Violet10) , the rate of dye uptakes was studied in absence and presence of the above additive at different time intervals and temperatures (80,90,95 oC). The obtained results indicate that the dye uptake increases under the different conditions mentioned. The highest dye exhaustion was obtained using 2%(V/V) benzyl alcohol/water mixture this was attributed to the increase in the accessibility of the acrylic fabrics in presence of benzyl alcohol. The rate of dyeing is closely related to the diffusion behavior of dyes. The dyeing rate increases with increasing diffusion coefficient of the dye. The calculated activation energy in presence of solvent gave another evidence for this conclusion. It is observed that optimum limit of benzyl alcohol concentration varies from dye to dye and is closely related to its molecular size.. The obtained results indicate that benzyl alcohol gave a maximum increase in dye uptake, even at a low concentration.


.. .:: ::. ..



MON : 22-03-2010 HALL[POSTER] POSTER - SEC01 ( 15 ) CHEM - 16

EG

DR. MOHAMED ABDELBASET

03:00

:

03:25

[email protected]

COBALT AND NICKEL COMPLEXES OF 2-(ARYLMETHYLENEACETYL) BENZIMIDAZOLE: SYNTHESES, CHARACTERIZATION AND ANTIBACTERIAL ACTIVITY STUDIES M. Abdelbaset , M. Abd-Elmottaleb Chemistry Department, Faculty of Science, Al Azhar University Assiut branch, Assiut, Egypt. Chemistry Department, Faculty of Science, Al Azhar University Assiut branch, Assiut, Egypt.

ABSTRACT A series of cobalt(II) and Nickel (II) complexes with 2-(Arylmethyleneacetyl)benzimidazole(L1L4) have been synthesized. These complexes were characterized using various physico-chemical techniques like elemental analyses, UV-Vis, IR, thermal analyses and X-ray diffraction. Also the complexes of Co(II) and Ni(II) with 2-(Arylmethyleneacetyl)benzimidazole in solution were studied by spectrophotometric methods which used for the determination of formation constants and the stioichiometries. The stoichiometry of the complexes is established 1:1 and /or 1:2 (M : L) by Jobs and molar ratio methods. The composition and stability constants of the complexes were determined. The antibacterial activity of these complexes against Gram positive and Gram negative has also been studied.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 17

EG

PROF. AMAL AHMED

03:00

:

03:25

[email protected]

PITTING CORROSION BEHAVIOR OF STAINLESS STEEL ELECTRODES IN CHLORIDE SOLUTIONS AMAL. S. I. AHMED , R.M.ABOU SHAHBA , W.A.M.HUSSEIN

ABSTRACT The pitting corrosion behavior of two stainless steel electrodes in different solutions of NaCl, was investigated using potentiodynamic cyclic anodic polarization (PCAP) and surface morphology techniques. The electrochemical behavior in 3.5% NaCl with and without different concentrations of, 3-amino-1, 2, 4 triazole (AT) , 4-amino-5-mercapto-1, 2, 4 triazole (AMT) and Na2S2O3 ¬(50 to 200ppm.) was studied. As the concentration of sodium chloride increased, the (PCAP) curves indicated the presence of pitting or crevice corrosion breakdown potential which sustained the increase of anodic current density. The plots of pitting potential (Epit.), or protection potential (Ep) versus log [Cl¯] at 25oC, for the two stainless steel electrodes were linearly decreased with the increase of the logarithm of chloride concentration. Also the increase of scan rate increases the localized pitting corrosion. The additions of sodium thiosulphate to 3.5% NaCl enhance pitting corrosion as compared with that found in pure sodium chloride solution. On the contrary, increasing concentration of (AT) and (AMT) in NaCl solution was found to greatly enhance IE%. The adsorptive behavior of the investigated inhibitors on the steel surface followed Langmiur-type isotherm. These results indicated the suitability of the use of the investigated (AT) and (AMT) as inhibitors. Electrode type (I) has a greater tendency for pitting than electrode type (II) due to the percentage of nickel in electrode type (I) is half that of electrode type (II).


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


03:00 : 03:25

CHEM - 18

EG

DR. NIRMIN MARZOUK

[email protected]

NEW BENZIMIDAZOLE DERIVATIVES AND THEIR COMPLEXES WITH URANIUM AND THORIUM Sh.A.Galala , N.A.Marzoukb , W.I.Zidanc , O.Elhefnawyc , J.A.Mickyb National Research Center, Dokki, Cairo, Egypt Department of Chemistry, Faculty of Science for Girls, Al-Azhar University Atomic Energy Authority, Cairo, Egypt

ABSTRACT Novel series of Schiff bases 1- (1H-benzo [d] imidazol-2-yl) –N- substituted methylene) methane amine were obtained from condensation of (1H-benzo[d] imidazol-2-yl) methane amine with aldehydes or ketone except with salycilaldehyde afforded (2,3-dihydro-1H- benzo [d] imidazo [1,5-a] imidazo-5-yl) phenol. Furthermore; (1H-benzo [d] imidazol-2-yl) methanethiol reacted with chloroacetyl chloride and 2-((chloromethyl)-1H-benzo[d] imidazole yielded (((1H-benzo [d] imidazol-2-yl)methyl 2-((1H-benzo[d] imidazol-2-yl) methylthio) ethanethioate and bis[(1Hbenzo [d] imidezol-2-yl)methyl] sulfane respectively. In addition, interaction of benzimidazole methanethiol with acrylonitrile afforded 3-((1H-benzo[d] imidezol-2-yl) methylthio) propane nitrile

which

condensed

with

salycilaldehyde

yielded

3-(((1H-benzo[d]

imidezol-2-yl)

methylthio) methyl)-2-H-chromen-2-imine dihydrochloride. Also; reaction of benzimidazole methanethiol with chloroacetic acid yielded 2- ((1H-benzo[d] imidazol-2-yl) methylthio) acetic acid dihydrochloride which cyclized by treatment with acetic anhydride to produce 1H-2-thia4a,g-diaza-fluoren-4-one. The synthesized compounds coordinated to uranyl nitrate or thorium nitrate to form complexes


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


03:00 : 03:25

CHEM - 19

EG

PROF. JEHANE MICKY

[email protected]

NOVEL SYNTHESIS OF INDENO [1`,2` :4,5] THEINO [2,3-D] PYRIMIDINE DERIVATIVES J. A. Micky Department of Chemistry, Faculty of Science(Girls),Al- Azhar University

ABSTRACT Indeno [1`,2` :4,5] theino [2,3-d] pyrimidin- 4(3H) thione is used as precursor for the synthesis of a series of 4-S-substituted indeno [1`,2` :4,5] theino [2,3-d] pyrimidine derivatives. Oxidation of S-ethyl gives the corresponding sulphone. The base hydrolysis of ester with sodium hydroxide and ammonium hydroxide forms the acid and the amide derivative respectively, but its reaction with hydrazine hydrate produces the acid hydrazide which react with carbon disulfide to yield 4- sulfonly methyl-[1,3,4] oxadiazole when treated with acrylonitrile affordes cyano ethyl derivatives. Moreover, the reaction of acid hydrazide with phenyl isothiocyanate forms the thiosemicarbazide which cyclized in sodium hydroxide to produce 1-N-phenyl [1,3.4] triazol. In addition; 4-S-ethylcyano indeno [1`,2` :4,5] theino [2,3-d] pyrimidine reacted with salicylaldehyde and 2- methyl-5- methoxy -6-fornyl-7-hydroxy benzopyran-4-one in the presence of piperidine furnished 2-imino benzpyran and 2- iminobezodipyran derivatives respectively. The antimicrobial activity of some of prepared compounds was discussed and some of them were found to be active.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 20

EG

DR. MONA KADAH


SYNTHESIS, ANTIBACTERIAL AND ANTICANCER STUDIES FOR NEW THIENO-, PYRAZOLOPYRIDINE AND AZAFLUORENE DERIVATIVES. Mona S. Kadah , M.S.Khalil Al-Azhar University, Faculty of Science (For Girls), Department of Chemistry, Cairo, Egypt, E-mail: [email protected] Al-Azhar University, Faculty of Science (For Girls), Department of Chemistry, Cairo, Egypt,

ABSTRACT Reaction of thiocyanoacetamide with 3,4,5-trimethoxybenzaldehyde gave the corresponding 2cyano-3-(3,4,5-trimethoxyphenyl)-thioacrylamide 1. Reaction of 1 with ethyl acetoacetate gave the pyridine derivative 2. Cyclization of 2 with hydrazine hydrate gave the pyrazolopyridine derivative 3. Diazotization of 3 gave the diazenyl derivative 4. The latter compound 4 was reacted with malononitrile, acetylacetone and ethyl acetoacetate to give pentoazafluorene derivatives

5-7,

respectively.

Moreover,

the

cyclocondensation

of

compound

2

with

ethylchloroacetate, bromoacetophenone, chloroacetamide and chloroacetonitrile gave the thienopyridine derivatives 8, 11, 12 and 15. Reaction of 12 with formic acid and acetic anhydride gave the thiatriazafluorene derivatives 13 and 14, respectively. Some of the new compounds showed antimicrobial and antifungal activities. Compound 11 have good anticancer activity for liver, breast and colon cancers.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 22

EG

PROF. RABAB ABOU SHAHBA

03:00

:

03:25

[email protected]

EFFECT OF SOME ADDITIVES ON THE CORROSION OF TIN IN ACIDIC MEDIA R.M.ABOU SHAHBA , A.S.I. AHMED , E.M.ATTIAAND , A. E. EL- SHENNAWY Chemistry Department, Faculty of Science (for Girls), AL- Azhar University, Nasr City, Cairo, Egypt Chemistry Department, Faculty of Science (for Girls), AL- Azhar University, Nasr City, Cairo, Egypt Chemistry Department, Faculty of Science (for Girls), AL- Azhar University, Nasr City, Cairo, Egypt Chemistry Department, Faculty of Science (for Girls), AL- Azhar University, Nasr City, Cairo, Egypt

ABSTRACT The behaviour of tin electrode in citric, oxalic, maleic and malic acids was studied at room temperature by potentiodynamic measurement. The various electrochemical parameters were calculated. In addition, the metallographic structure of tin surface electrode was examined for some solutions using scanning electron microscope (SEM). The anodic E/I curves were characterized by active - passive transition state. The anodic active region was due to the formation of soluble Sn(II) species. The passivity of tin anode was related to the hydrolysis of Sn(IV) and precipitation of Sn(OH)4 film on the anode surface. The addition of different percentages of sucrose,sodium citrate and potassium oxalate to (1 M) of all organic acids used inhibited the anodic dissolution of tin electrode and enhanced the attainment of passivity. While the addition of sodium chloride accelerated the corrosion of tin and delayed the establishment of passivation. In citric, maleic and malic acids, inhibition was of mixed type and occurred by adsorption of SnL complex molecules following the Temkin isotherm. In case of oxalic acid the inhibition was found to be predominantly anodic occurring by adsorption of SnL2 complex and following the Langmuir isotherm.…


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MON : 22-03-2010

HALL[POSTER]


CHEM - 23

EG

PROF. FARAG ABDELHAI

03:00

: 03:25

[email protected]

ANTIMICROBIAL ACTIVITY OF SOME MODIFIED POLYESTERAMIDE RESINS FOR SURFACE COATINGS abdelhai farag , Sabbah I.A. , GAbr M.Y. Department of chemistry, Faculty of science, Al-Azhar University, Cairo, Egypt. Department of chemistry, Faculty of science, Al-Azhar University, Cairo, Egypt.

ABSTRACT Various polyesteramide compositions are prepared by solvent technique containing a stoichiometric amount of N,N,dihydroxyethyl-2-thiophenamide (HETA) as preservative against microbiological attack. Mechanism of action of (HETA) against Bacillus subtiles ATCC 7972,Staphylococcus Aureus NCTC 7447,Escherichia Coli NCTC 10416,Pseudonymous aeruginosa ATCC 10145,Candida Albicans Imru 3669,and Aspergillus Niger ATCC 6275 are discussed and the studies showed promising results as biocidal coatings. preparation of polyesteramid resins via solvent process by using a new technique is another aspect taken into consideration.


.. .:: ::. ..




EG

03:00 : 03:25

ASSOC.PROF. SAMIA EL-HOSIENY ABO-FARHA [email protected]

ANION EXCHANGE BEHAVIOR OF SOME ELEMENTS IN ACETIC ACID-HYDROCHLORIC ACID MEDIA S.A.Abo-Farha , N.A.Badawy , A.A. Emam , N.M.Moursy Ass. prof.of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt Prof.of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt Lecture of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt

ABSTRACT The heavy metals contamination of soil and water has stimulated the search for soft technologies to remove these pollutents. The objective of this study is to develop a rapid and quantitative sequential separation methods of Cd(II), Zn(II), Mn(II) and Ni(II) with a strong base anion exchange resin prolite A-400 in both chloride form-RCl and acetate form-RAc. The adsorbabilities of metal ions have been studied in the presence of different acetic acid concentrations. The

d data of metal ions were the

following selectivity sequence: Cd(II) > Zn(II) > Mn(II) > Ni(II). The adsorbabilities of metal ions were slightly higher over the whole molarity range of acetic acid (0–18 M) for RCl-resin form than RAc-resin form. The addition of HCl acid to acetic acid medium markedly enhanced the sorption of many heavy metal ions on purolite A-400. Several binary separations of metal ions were achieved on the basis of their d values. Furthermore Langmuir and Freundlish isotherme, have been described.


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MON : 22-03-2010

HALL[POSTER]


03:00 : 03:25

CHEM - 25

EG

PROF. NAGWA BADAWY

[email protected]

THE EFFECT OF CHELATING AGENT ON THE SEPARATION OF SOME METAL IONS FROM BINARY MIXTURE SOLUTION BY CATION-EXCHANGE RESIN S. A. Abo Farha , N.A. Badawy , A.A. El-Bayaa , S.E. Garamon Ass. Prof. of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt. Prof. of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt. Prof. of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt. Dh.D researcher

ABSTRACT The need to clean-up heavy metal contaminated environment can not be over emphasized. This paper has been studied the distribution coefficients of Ce(IV), Al(III), Fe(III), Bi(III), Ca(II), Ba (II) and Pb(II) on cation exchange resin Purolite C100 in the presence of some chelating agent at 25°C. Sodium nitrate, citric acid and ethylene diamine tetraacetic acid (EDTA) were tested as eluants. The relative efficiency of the eluants has been discussed in terms of their elution constants. A rapid ion-exchange method was proposed for the separation of lead cations. The method has depended on the selective complexing of metal ions by a chelating agent as achieved by control of pH. Several binary separations of metal ions have been achieved on the basis of their kd values.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 26

EG

PROF. RABIE FARAG

03:00

:

03:25

[email protected]

CONFIRMATORY METHOD FOR DETECTION 11-NOR- 9 TETRAHYDROCANNABINOL-9-CARBOXYLIC ACID IN URINE SAMPLES USING GAS CHROMATOGRAPHY–MASS SPECTROMETRY (GC/MS) Rabie S. Farag , Sayed R. Abed Al-salam Prof. of inorganic chemistry, Al-Azhar University, Cairo, Egypt drugs and toxicology expert, Medico-Legal Organization, Cairo, Egypt

ABSTRACT Gas chromatography mass spectrometry (GC/MS) analysis of 11-Nor- 9-tetrahydrocannabinol-9 -carboxylic acid (THC-COOH), the major metabolite of tetrahydrocannabinol in biological samples is reported, the THC metabolite obtained by alkaline hydrolysis from urine samples were extracted using mixture of solvents followed by trimethylsilylation. The dervatized extract was submitted to GC/MS analysis of EI-SIM mode. Different factors were studied as pH, temperature, time to establish the best conditions for the determination. The calibration curves of THC-COOH derivatized in urine samples were linear in the concentration range from 10 to 150 ng/ml. the proposed method is able to detect the major metabolite of cannabis derivatives at very low level (10 ng/ml) with high specificity so these analytical procedure can be used as confirmatory method in drug testing of cannabis use.


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MON : 22-03-2010

HALL[POSTER]


03:00 : 03:25

CHEM - 27

EG

ASSOC.PROF. ABDALLA KHEDR

[email protected]

2-(2-HYDROXYNAPH-1-YLAZO)-PYRIDINE AS NEW CHROMOGENIC REAGENT FOR SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF SOME TRACE METAL IONS IN REAL SAMPLES Raafat M. Issa , Maged A. El-Kamry , Abdalla M. Khedr , Redda B. Hasn Faculty of Science, Tanta University, Tanta, Egypt Faculty of Science, Kafr-Elshakh University, Kafr-Elshakh, Egypt Faculty of Science, Tanta University, Tanta, Egypt Faculty of Science, Tanta University, Tanta, Egypt

ABSTRACT A new, simple and rapid spectrophotometric method for simultaneous determination of Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) using 2-(2-hydroxynaph-1-ylazo)-pyridine (HL) is established. The proposed method is based on the formation of stable colored 1:1 and 1:2 (M:L) complexes between HL and the mentioned metal ions in universal buffer solutions. The optimum conditions (pH, time, temperature, reagent concentration, sequence of addition and solvent

ratio

as

well

as

foreign

ions)

for

chelates

formation

are

studied.

The

spectrophotometeric analytical characteristic (suitable wavelengths, absorption maxima, molar absorptivities, linearity ranges, Ringbom ranges, stability constants and free energy changes) of the formed complexes are determined. The investigated method was applied to simultaneous determination of some trace metal ions in real samples with satisfactory results. Some solid HL -complexes are prepared and subjected to different analytical and spectral techniques in order to investigate the mode of bonding between HL and the metal ions under interest.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 28

EG

DR. AHMED BADR EL-DIN

03:00

:

03:25

[email protected]

STRUCTURAL INFLUENCE OF THE LIGAND GEOMETRY ON CONSTRUCTION OF COORDINATION POLYMERS FORMED FROM SILVER(I) CHLORIDE RIBBONS AND BIPODAL NITROGEN DONOR LIGANDS Safaa El-din H. Etaiw , Ahmed S. Badr El-din Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt

ABSTRACT Assembly of the ternary adducts from silver nitrate, KCl and bipodal nitrogen donor ligands; 4,4'-bipyridine(bpy), trans-1,2-bis(4-pyridyl)ethylene(tbpe) or 1,2-bis(4-pyridyl)ethane(bpe), at room temperature affords new coordination polymers (CPs), [(AgCl)2.bpy]; 1, [(AgCl)2.tbpe]; 2 and [(AgCl)3.(bpe)2]; 3. X-ray single crystal analysis revealed that the networks of CPs 1-3 are composed of different types of infinite 1D-ribbon of ladder, 1, and staircase, 2 and 3, structures formed from fused minicyle {Ag2( 3-Cl)2} motifs which are connected by the nitrogen donor ligands

forming

2D-layers.

argentophilic interaction and

Supramolecular -

interactions

such

as

hydrogen-bonding,

stacking play a prominent role in the assembly of these

coordination polymers. The products were characterized also by IR spectra and electronic absorption spectra. CPs 1-3 display strong fluorescence in the solid state at room temperature.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 64

EG

DR. MOHAMED SAAD

03:00

:

03:25

[email protected]

A NOVEL GRAFTED CELLOPHANE MEMBRANE FOR PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC) APPLICATIONS M. S. Mohy Eldin , E. A. Hassan , M. M. El-Sabbah , K. M. El-Khatib , A.A. Elzatahry Polymer Materials Research Department Advanced Technologies and New Materials Research Institute (ATNMRI), Mubarak City for Scientific Research and Technology Applications (MUCSAT), New Borg El-Arab City, Alexandria 21934, Egypt Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt Pilot Plant Department, Engineering Division, National Research Center, Dokki, Giza, Egypt Polymer Materials Research Department Advanced Technologies and New Materials Research Institute (ATNMRI), Mubarak City for Scientific Research and Technology Applications (MUCSAT), New Borg El-Arab City, Alexandria 21934, Egypt Polymer Materials Research Department Advanced Technologies and New Materials Research Institute (ATNMRI), Mubarak City for Scientific Research and Technology Applications (MUCSAT), New Borg El-Arab City, Alexandria 21934, Egypt

ABSTRACT Modified cellophane membranes for direct oxidation methanol fuel cells (DMFC) have been prepared through three steps. The first step was introducing of epoxy groups to its chemical structure through grafting process with PGMA. Factors affecting the grafting process have been studied. The second step was converting the introduced epoxy groups to amine group. The third and last step addition of phosphoric acid (–PO3H) groups in the amino side chains of the grafted membranes significantly contributed to enhancing ion exchange capacity (IEC).The verification of the grafting, amination and phosphorization steps has been performed through characterization of the obtained membranes using FTIR, TGA, and SEM. The mechanical properties of cellophane modified membranes increased the thickness of the grafted membranes increases with increasing of the grafting percentage and the thermal stability is increasing. The methanol permeability of modified membranes is lower than that of cellophane membrane and it is decrease with increasing the grafted polymer content. The efficiency factor for all modified membranes is higher than that of ungrafted cellophane with maximum value at 74%grafting percentage. This make the modified cellophane is more attractive in application of direct methanol fuel cells.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 29

EG

DR. AHMED ABDELHAMED


OXO ANILIDES IN HETEROCYCLIC SYNTHESIS: NOVEL SYNTHESIS OF POLYFUNCTIONALLY SUBSTITUTED PYRIDINE AND CONDENSED PYRIDINES Abdel Haleem M. Hussein , M. S. A. El-Gaby , A. A. Khames , A. M. El-Sharief , Y. A. Ammar Department of Chemistry, Faculty of Science, Al Azhar University, Assiut, 71524, Egypt Department of Chemistry, Faculty of Science, Al Azhar University, Assiut, 71524, Egypt Department of Chemistry, Faculty of Science, Al Azhar University, Assiut, 71524, Egypt Department of Chemistry, Faculty of Science, Al Azhar University, Naser city. Cairo, Egypt Department of Chemistry, Faculty of Science, Al Azhar University, Naser city. Cairo, Egypt

ABSTRACT Acetoacetanilide 1 was condensed with N,N-dimethylformamide-dimethylacetal (DMF-DMA) in refluxing xylene to yield the pyridone 2. Compound 2 was reacted with malononitrile to yield the isoquinoline derivative 3. Reactions of 2 with a mixture of malononitrile and elemental sulfur afford 4. Condensation of compound 2 with aromatic aldehydes afford the acryloyl derivatives 5. Also, compound 2 reacted readily with arylidenemalononitrile to afford the expected addition product 6. Furthermore, treatment of pyridone 2 with hydrazine hydrate in oil bath without solvent gave the pyrazolo[3,4-b]pyridine 7 and with phenylhydrazine afforded the hydrazone derivative 8. When, the pyridone 2 was reacted with equimolar amount with (DMF-DMA) afforded the enaminone 9 as major product and its isomer 10 in minor product.


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MON : 22-03-2010

HALL[POSTER]


CHEM - 30

EG

DR. AHMED ELHENAWY


DESIGN, SYNTHESIS OF NEW PEPTIDE DERIVATIVES AND EVALUATED DNA BINDING ACTIVITY, ANTICANCER, ANTIMICROBIAL AND DOCKING STUDIES TOWARDS CARBONIC ANHYDRASE ISOZYMES. A. A. EL-Henawy , T.M.Ibrahim , H.S.Nassar Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo-Egypt. abstract Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo-Egypt. abstract Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo-Egypt. abstract

ABSTRACT Sulfonamides posses many types of biological activities and have recently been reported to show substantial antitumor activity in vitro and/or in vivo. There are a variety of mechanisms for the anticancer activity and the most prominent of these is through the inhibition of carbonic anhydrase isozymes. The present work reports the synthesis of some novel peptide sulfdiazine derivatives. The design of the structures of these compounds complies with the general pharmacophore of the sulfonamide compounds that act as carbonic anhydrase (CA) inhibitors; this may play a role in their anticancer activity. All the newly synthesized compounds were evaluated for DNA binding activity, and antimicrobial activity. Some selected compounds were evaluated for anticancer activity against breast cancer cellline (MCF7) in vitro. virtual screening using molecular docking studies of the synthesized compounds were performed. Some synthesized compounds showed high antimicrobial activity. Also, the molecular docking results and anticancer screening indicate that some synthesized compounds most suitable inhibitor against (CA) inhibitors compared to a reference drug.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


03:35

CHEM - 31

EG

PROF. IBRAHIUM SABBAH

:

04:00

[email protected]

PREPARATION AND EVALUATION OF SOME MODIFIED POLYESTERAMIDE RESINS FOR ORGANIC COATINGS Ibrahium sabbah , F. Abdelhai , F. Gabr Chemistry Departement, Faculty of Science,Al-Azhar University,Cairo,Egypt. Chemistry Departement, Faculty of Science,Al-Azhar University,Cairo,Egypt. Chemistry Departement, Faculty of Science,Al-Azhar University,Cairo,Egypt.

ABSTRACT Various

polyesteramide

resins

were

prepared,

in

which a

stoichiometric

amount

of

hydroxyethyl linseed fatty acid amides (HELA) are replaced by N,N-dihyroxyethyl 2-furanamide (HEFA).

Such

microorgansms.

modified

compositions

showed

to

have

biological

activity

towards


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 32

EG

PROF. MOHAMMAD GHAMRY


MACRORETICULAR EXCHANGERS FROM CORNCOBS M-CRESOL FORMALDEHYDE RESINS M.S. Metwally , N.E. Metwally , M.F. El-Hadi Chemistry Department, Faculty of Science, Al-Azhar University Chemistry Department, Faculty of Science, Al-Azhar University Chemistry Department, Faculty of Science, Al-Azhar University

ABSTRACT The paper is concerned with a simple method for preparing macroreticular exchangers from polycondensation of Egyptian corncobs with m-cresol and paraformaldehyde as a crosslinking agent. Reaction conditions for the preparation are presented and properties are compared with resin not containing corncobs. The synthesized resins are stable in water, mineral acids (1M), organic solvents and to thermal treatment.The resins, having a cation exchange capacity up to 2.41 meq g-1 of dry resin, are being introduced as new catalysts in the hydrolysis of methyl acetate. The efficiency of the cationic exchangers (q) is calculated for resins with various percentages of corncobs and activation parameters have been evaluated.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 34

SA

DR. ABDULLAH AL-SEHEMI


GEOMETRY AND BARRIERS TO ROTATION ABOUT N-N BONDS IN 3ACYLAMINOQUINAZOLI-4(3H)-ONE DERIVATIVES: EXPERIMENTALLY AND QUANTUM CHEMICAL STUDY Abdullah G. Al-Sehemi , Reem S. Al-amri Chemistry Department, Faculty of Science, King Khalid University, Abha, KSA, Saudi Arabia Chemistry Department, Faculty of Science, King Khalid University, Abha, KSA, Saudi Arabia

ABSTRACT Synthesis of N-N-monoacylaminoquinazolinone (MAQ) were prepared by the microwave irradiation, which can be synthesis accomplished in three steps. First step a mixture of acid chloride with methyl anthranilate. The yields are very good to excellent. Second step a mixture of antharanilate with hydrazine and using the microwave irradiation without solvent gave 3aminoquinazolinone (Q-NH2). MAQ’s were obtained by N-acylation of Q-NH2 with acid chloride. Compared with the Solvent Refluxing Method, the microwave radiation technique had a better yield and a shorter reaction time. Four rotamers of 3-acylaminoquinazoli-4(3H)-one, R1–R4, were studied theoretically at CBS-QB3, B3LYP/6-31G(d,p) and HF/6-31G(d,p). Optimized geometrical parameters of all the four conformers were computed and compared with the available X-ray results. The geometry of B3LYP/6-31G(d,p) method shows the best agreement with the experimental results. Thermodynamic parameters for the four rotamers were calculated at the above levels in the gas phase. Rotamer R1 is the most stable rotamer in all cases as also known from experimental data. Natural charges and electric dipole moment were computed at different levels.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 36

EG

DR. YUSIF EL-SAYED

03:35

:

04:00

[email protected]

SPECTROSCOPIC, THERMAL AND BIOLOGICAL STUDIES OF 1-[(5-MERCAPTO[1,3,4]THIADIAZOL-2-YLIMINO)-METHYL]-NAPHTHALEN-2-OL AND ITS CO(II) AND CU(II) COMPLEXES. Nadia A. El-Wakiel , Yusif S. El-Sayed , Mohamed Gaber Faculty of Science, Tanta University, Tanta-Egypt Faculty of Science, Tanta University, Tanta-Egypt Faculty of Science, Tanta University, Tanta-Egypt

ABSTRACT The electronic absorption spectrum of 1-[(5-mercapto-[1,3,4]thiadiazol-2-ylimino)-methyl]naphthalen-2-ol (H2L) is studied in organic solvents of different polarity as well as in universal buffer solutions of varying pH values at room temperature; the pKa values are calculated. The effect of Co(II) and Cu(II) ions on the electronic absorption spectrum of the free ligand is also assigned and the stability constants of the complexes are calculated. The stoichiometry of the metal complexes is determined spectrophotometrically. Co(II) and Cu(II) complexes with the thiadiazol Schiff base have been synthesized and characterized on the basis of elemental analyses, molar conductance, magnetic susceptibility measurements, IR, electronic as well as ESR spectral studies. The thermal decomposition of the metal complexes is studied by TGA and DTA techniques. The thermo-kinetic parameters; activation energy, pre-exponential factor and entropy of activation are estimated. The antimicrobial activity of ligand and some of its complexes have been studied.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


03:35 : 04:00

CHEM - 37

EG

DR. ALAA EL-DEEN ALI MOHAMED

[email protected]

SYNTHESIS, STRUCTURE AND THERMAL STUDIES OF SOME URIC ACID COMPLEXES Mamdouh. S. Masoud , Medhat A. Shaker , Alaa E. Ali , Gehan S. Elasala Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt Chemistry Department, Faculty of Science “Damanhour”, Alexandria University, Alexandria, Egypt Chemistry Department, Faculty of Science “Damanhour”, Alexandria University, Alexandria, Egypt Chemistry Department, Faculty of Science “Damanhour”, Alexandria University, Alexandria, Egypt Chemistry Department, Faculty of Science “Damanhour”, Alexandria University, Alexandria, Egypt

ABSTRACT Eighteen uric acid complexes of different transition elements were prepared and identified by Ir, Uv-Vis. spectroscopy and elemental analysis. The structures of the complexes were of different

geometries.

The

interaction

between

Fe3+

ion

and

uric

acid

was

studied

spectrophotometrically in solution. The copper complexes were studied by ESR spectroscopy. The thermal behavior of the complexes was studied by DTG, DTA and DSC techniques. The mechanism of the thermal decomposition steps was suggested. The kinetic parameters were calculated.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 38

EG

PROF. FARAG ABDELHAI

03:35 :

04:00

[email protected]

PREPARATION AND CHARACTERIZATION NEW WATER SOLUBLE RESINS FOR SURFACE COATING M.Mostafa , A.M.Naser , F.abdel-Hai , H. Abd El-Wahab professor of organic chemistry professor of organic chemistry professor of organic chemistry Lecture of applied chemistry

ABSTRACT Waterborne coatings can be divided into the general classes, water-soluble or water-dispersible (colloidal dispersion and emulsions). The main object of the present investigation is to prepare new modified water-soluble polyesteramide resins, which combine the usefulness properties of both polyester and polyamide. The modification is brought about through the partial replacement of phthalic anhydride by methylene disalicylic acid.,MDSA, ( I ) or m- phenylene dioxydiacetic acid,PDODA, ( II ) in various conventional resin formulations which expected to, imp roved the film performance and durability.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 39

EG

MR. KHAMIES SHAABAN


EFFECT OF MOO3 ADDITION ON THE CRYSTALLIZATION BEHAVIOR OF AL2O3LI2O-B2O3 GLASS KH.S. Shaaban , S.M. Abo-Naf , M.E.M. Hassouna , Y.B. Saddeek Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt prof. assistant Glass Research Department, National Research Centre (NRC), El-Behoos Str., Dokki, 12622 Cairo, Egypt prof.Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt prof. assistant Physics Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt

ABSTRACT The effect of MoO3 addition on the crystallization characteristics of 2Al2O3-30Li2O-68B2O3 glass (where xMoO3= 0, 10, 20 and 40 wt%) has been investigated. The compositional dependence of the glass transition (Tg) and crystallization (Tc) temperatures was determined by differential thermal analysis (DTA). It was found that both of the Tg and Tc decrease with increasing MoO3 content. The amorphous nature of the as-quenched glass and crystallinity of the produced glass-ceramics were confirmed by X-ray powder diffraction (XRD) analysis. Glass –ceramics embedded with diomignite (lithium diborate, Li2B4O7) were produced from all investigated glasses by heat-treating the as-quenched glasses at the appropriate temperatures obtained from the DTA traces. Addition of MoO3 to the glass composition, at 10% MoO3, causes the formation of lithium molybdenum oxide (Li4MoO5) crystalline phase in addition to the diomignite phase. Increasing MoO3 content to 20% causes a phase transformation of lithium molybdenum oxide from the (Li4MoO5) to the (Li2MoO4) phase, and the formation of another lithium borate (Li4B2O5) phase in addition to the diomignite. Further increase of MoO3 content to 40% results in another phase transformation to the lithium aluminum molybdenum oxide [LiAl(MoO4)2], and, in this case, the molybdenum content was excess enough to crystallize the molybdiate (MoO3) itself. Scanning electron microscopy (SEM) was used to characterize the morphology and microstructure of the formed solid solution phases.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 40

EG

ASSOC.PROF. ABEER FATHALLAH


A NEW PRINTING METHOD FOR COLORATION THE ACRYLIC FABRIC Wageh Ahmed Abdallah , Enas Mohmed Reda El-Zairy , Abeer Ibrahem Fathallah , Wesam Mohmed Reda El-Zairy Textile Printing, Dyeing and Finishing Division, Faculty of Applied Arts, Helwan University, Cairo, Egypt. Textile Printing, Dyeing and Finishing Division, Faculty of Applied Arts, Helwan University, Cairo, Egypt. Textile Printing, Dyeing and Finishing Division, Faculty of Applied Arts, Helwan University, Cairo, Egypt. Textile Printing, Dyeing and Finishing Division, Faculty of Applied Arts, Helwan University, Cairo, Egypt.

ABSTRACT A new method for printing polyacrylic fabric with special disperses dye containing free amino groups in their chemical structure is described in detail. The fore functional groups converted into ammonium cations (+NH3) having positive charges during steaming the prints in slightly acid medium at saturated steam which confer on the dye affinity for acrylic fibers that have anionic sites under the ambient steaming conditions. The formation of ionic link between positive and negative charges of the dye and the substrate respectively improves the fastness properties as well as dye uptake compared to the origin (unionized) disperse dye.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 43

EG

DR. MAHMOUD TAHER

03:35

:

04:00

[email protected]

EFFECT OF WATER TREATMENT OF CEMENT KILN DUST ON THE PROPERTIES OF ORDINARY PORTLAND CEMENT Dr. M.A.Taher , Dr. M.S.Saraya Chemistry Dept., Faculty of Science, Al-Azhar Univ., Assiut branch, Assiut, Egypt. Chemistry Dept., Faculty of Science, Al-Azhar Univ., Cairo , Egypt.

ABSTRACT The influence of addition of cement kiln dust (CKD) which produced from plants kilns during the production of Portland cement with or without curing on the properties of ordinary Portland cement (OPC) was investigated in this study. CKD was added to OPC in different proportions by weight 5%, 10%, 15%, 20% and 25% with or without curing. The CKD were cured at different methods: the 1st method by immersing CKD in tap water at 25oC for 24 hours with continuous stirring, the 2nd method by immersing CKD in hot tap water (90oC) for 24 hours with continuous stirring and the 3rd without curing of CKD. The specimens will be prepared by mixing OPC with dry CKD at different proportions with water to get the pastes and then mould in cylinder moulds. After setting of the pastes, the hydraulic properties of different mixes were studied by measuring bulk density, porosity, and compressive strength while the kinetic of hydration were studied by measuring the free lime and chemically combined water contents after curing in water at different ages 3, 7, 28 and 90 days. The change in morphology and microstructure were studied using scanning electron microscopic (SEM). The results of this investigation indicated that partial substitution of OPC with 5% cured CKD in water at 25oC and 10% cured CKD in water at 90oC improved the physicochemical properties of OPC.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 44

EG

ASSOC.PROF. HASSAN OMAR


SYNTHESIS OF SOME HETEROCYCLIC DERIVATIVES OF L-VALINE AS ANTIMICROBIAL AGENTS H.M.Hassan , S.A.M.Shedid , M. S.Ahmed

ABSTRACT N-(4-Acetylbenzenesulphonyl)-L-valine

(II)

was

prepared

by

the

reaction

of

p-

acetophenonesulphonyl chloride (I) with L-valine in sodium hydroxide solution. Reaction of Lvaline (II) with aromatic aldehydes afforded the corresponding chalcones (V-VII). The latter chalcone (VII) was further brominated and treated with piperidine or morpholine to form the corresponding 2,3-dipiperidinyl-or morpholinyl derivatives (IX-X) . The substituted chalcones, on condensation with hydrazine hydrate , phenyl-hydrazine in acetic acid or ethanol provided the desired pyrazolines (XI-XIII) and (XIV-XVIII). Also, the reaction with hydroxylamine hydrochloride furnished isoxazoles (XIX-XXI).The same chalcones made to react with malononitrile in presence of piperidine and ethylcyanoacetate and ammonium acetate gave cyanopyran and pyridine derivatives respectively( XXII and XXIII ). The structure of these derivatives was confirmed by elemental analyses, IR, NMR and MS spectral studies. Some of the synthesized compounds have been screened for their antimicrobial activity against various strains of bacteria and fungi.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 45

EG

ASSOC.PROF. FATMA ABDEL-SALAM


SYNTHESIS, ANTIMICROBIAL ACTIVITY AND MICELLIZATION OF GEMINI ANIONIC SURFACTANTS IN A PURE STATE AS WELL AS MIXED WITH A CONVENTIONAL NONIONIC SURFACTANT Fatma H. Abdel-Salam Al-azhar University-Faculty of Science(girls)-Chemistry Department

ABSTRACT New gemini anionic surfactants were prepared from sodium salts of monoalkyl sulfosuccinate esters of ethylene glycol having variably long tails (C12, C16, C18)and dichloroethane. The chemical sructures of the prepared surfactants were confirmed using different spectroscopic techniques. The surfaces tension values of the synthesized surfactants were measured at 25 C individually or mixing at different molar fractions with ethoxylated alkylphenol. In all cases, mixed micellar aggregates were formed and critical micellar concentrations of binary mixtures containing different mole fractions of the surfactants were measured. The micellization processes of the individual and mixed surfactants were investigated. The effect of different alkyl chains of gemini anionic surfactants on properties of binary systems and molar ratio in the mixed aggregates were deduced. The critical micelle concentration of mixed surfactants shifted to lower values compared to those of the single surfactants. Effectiveness values increased with decreases in the mole fraction of gemini anionic surfactants. The negative values of interaction parameter (b) increased with increases in the chain length of anionic surfactants. The activity coefficient (f1, f2) and total minimum surface area of mixed solution were calculated. Also, the gemini anionic surfactants prepared have moderate antimicrobial activity towards bacteria and not active towards fungi.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 46

EG

PROF. ALI MOSTAFA

03:35

:

04:00

[email protected]

SYNTHESIS OF ZEOLITE ZSM-5 FROM RICE HUSK, ENCAPSULATED COPPER (BOA) COMPLEX A. M. Ali , K. saif , M. thabet Faculty of Science, Al-Azhar University. Faculty of Science, Al-Azhar University. Faculty of Science, Al-Azhar University.

ABSTRACT Cu-BOA complexes [where (BOA=2[benzo[b]oxazole]acetonitrile)] encapsulated in the cavities of zeolite ZSM-5 [ where ZSM-5 is synthesized from silica is extracted from rice husk] . samples obtained by synthesizing the complexes in situ in the cavities of the zeolite by the zeolite synthesis method [ZSM] . The composition and structure of this new catalyst have been identified. The prepared zeolites have been characterized by elemental analysis, powder X-ray diffraction (XRD). Fourier transforms infrared spectroscopy (FT-IR). Ultra violet visible spectroscopy (UV-VIS) . Thermal analysis (DTGA), surface area measurements and nitrogen adsorption (surface texture) . The data is showed the crystallinity by (XRD) is closed to been each other the crystallinity by (FT-IR) and (surface texture). The surface area showed it was observed that the lower of pore volume and surface area indicates the presence of Cu-complex with in the cavities in the zeolite and not on the external surface area. The rate decomposition H2O2 over these encapsulated with the rates of oxidation of benzene to phenol.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 48

EG

PROF. TAREK MOSTAFA

03:35

:

04:00

[email protected]

SYNTHESIS OF SOME NEW THIOPHENE DERIVATIVES Prof. Dr. T.M. Ibrahim , M. H. Y. Kreet Chemistry Department, Faculty of Science ,Al-Azhar University Egyptian Forensic Medicine Ministry

ABSTRACT Several thiophene-2-acetylamino acid (9-12) were prepared by coupling of thiophene-2-acetyl chloride (8) with the appropriate amino acids in sodium hydroxide-benzene medium. Thiophene-2-acetyldipeptide metyl esters (13-30) were prepared by coupling of thiophene-2acetylamino acid (9-12) with amino acid methyl ester hydrochlorides (1-7) via carbodiimide technique in THF / (C2H5)3N medium. The compounds (13-30) were converted into related dipeptide (31-48) by NaOH. Thiophene-2-acetyldipeptide hydrazides (49-66) were easily prepared by the treatment of the corresponding dipeptide methyl esters (13-30) with alcoholic hydrazine hydrate. All the synthesized compounds (19-150) were against different types of microorganisms, and some of them were found to possess antimicrobial activities.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 49

EG

PROF. HASSAN SHEHATA

03:35

:

04:00

[email protected]

EVALUATION OF SOME LABORATORY PREPARED CATIONIC SURFACTANTS AS CORROSION INHIBITORS AND BIOCIDES Hassan A. Shehata , Abd Alaa Abd El-Wahab , A. Hafiz , I.Aiad , M.Hegazy Al-Azhar University, Faculty of science, Department of Chemistry. Al-Azhar University, Faculty of science, Department of Chemistry. Egyptian Petrolum Reseach Institute. Egyptian Petrolum Reseach Institute. Egyptian Petrolum Reseach Institute.

ABSTRACT In this study some laboratory prepared cationic surfactants were evaluated as multifunctional compounds (corrosion inhibitors and biocides). The prepared materials were decyl, dodecyl, hexadecyl and octadecyl triethylammonium bromide. The inhibitors concentrations ranged from 0 up to 40x10-4 M in 0.5 M H2SO4 and the solution temperatures are ranged from 25 up to 55 oC. the results indicated that the biocidal activity of the tested surfactants increased towards gram positive, gram negative bacteria and fungi, so these compounds could be used as bacteriostatic and bactericides. It was found also that its efficiency increased with increasing the hydrophobic part. The corrosion inhibition measurements of these surfactants showed that they had higher tendency towards protection of mild steel against acidic environments. The thermodynamic parameters of adsorption; i.e. standard free energy entropy

Go, enthalpy

Ho, and

So were calculated. The results obtained from surface measurements, biological

activity and polarization technique qualified the synthesized cationic surfactants to be applicable as multifunctional compounds.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 50

EG

PROF. ALI HASSAN

03:35

:

04:00

[email protected]

SYNTHESES, SPECTRAL STUDIES, ELECTRON SPIN RESONANCE (ESR) AND THERMAL STUDIES OF COPPER(II) COMPLEXES CONTAINING NS AND ONS DONOR SCHIFF BASES. Ali M Hassan , Marguerite A. Wassef , Aly A.A. Soliman , Manara A. Ayoub Chemistry department, Faculty of Science, Al-Azhar University, Cairo, Egypt Chemistry department, College of Girls, Ain-Shams University, Cairo, Egypt. Chemistry department, College of Girls, Ain-Shams University, Cairo, Egypt. Chemistry department, College of Girls, Ain-Shams University, Cairo, Egypt.

ABSTRACT Syntheses and spectroscopic studies of Cu(II) complexes with tridentate and bidentate Schiff base

ligands

of

[N-(2-mercaptophenyl)salicylideneimine]

H2LI,

[N-(2-mercaptophenyl)

naphthylideneimine] H2LII, [N-(2-mercaptophenyl)furan-2-carboxyli-deneimine] H2LIII and [N -(2-mercaptophenyl)cinnamilideneimine] HLIV are described. The ligands and their complexes were characterized by elemental analysis, magnetic moment, conductance, UV-Visible, FTIR, Ms, 1H-NMR, ESR spectra and thermal analysis (TG and DTG) techniques. The conductance data reveal that all the metal chelates are non-electrolytes. IR spectra of the complexes with the ligands H2LI and H2LII show that the ligands behave as bivalent anion with tridentate ONS donors derived from the phenolic oxygen, azomethine nitrogen and phenolic sulfur, while the H2LIII and HLIV ligands behave as bidentate NS donors derived from azomethine nitrogen and phenolic sulfur. From magnetic and ESR spectra results, it is concluded that the geometrical structures of these complexes are octahedral and tetrahedral. The kinetic thermodynamic parameters such as: E*, H*, S* and G* were determined for each thermal degradation stage of TG curves of the Cu(II) complexes using Horowitz–Metzger methods.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 51

EG

PROF. ALI HASSAN

03:35

:

04:00

[email protected]

PREPARATION AND CHARACTERIZATION OF FORSTERITE AND STUDYING OF AL2O3 ON ITS PROPERTIES AND BIOCOMPATIBILITY Ali M hassan , Mahmoud Farag Zawrah , Rabea Saad Farag , Saleh Desoky Mohammed Mekky Faculty of Science- Al-Azhar University Prof. of Chemistry of Advanced Ceramic Materials and Nanotechnology, NRC Prof. of Inorganic Chemistry Faculty of Science-Al-Azhar University

ABSTRACT Forsterite (Mg2SiO4) ceramics were prepared by sintering the Mg2SiO4 green compacts at 1350 –1550ºC and the sintering behavior and mechanical properties were examined. 3, 5, and 10 wt. % Al2O3 were added with during the preparation to this additives, study their effect on the densification process and phase composition of the prepared materials. Alumina reacts with equimolar MgO from forsterite to form MgAl2O4 spinel on sintering at 1000ºC /3h. The aim of this work was preparation, characterization and bioactivity evaluation of forsterite also. Forsterite powder was synthesized by the sol–gel process. Bioactivity evaluation was preformed by immersing the sintered bodies of forsterite in the simulated body fluid (SBF) and apatite formation on the surface of the immersed sintered bodies was investigated. Results showed the particle size the samples forsterite was 100-375nm. During immersion in SBF, The pure forsterite sample exhibited higher amount of apatite layer on its surface.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 52

EG

PROF. ALI HASSAN

03:35

:

04:00

[email protected]

PREPARATION AND EFFECTS OF TEMPERATURE ON NANOCRYSTALLINE ITO PARTICLES SYNTHESIZED BY CO-PRECIPITATION WITH DIFFERENT SNO2 CONTENT Z.M. Hanafi , F.F. Hammad , A.M. Youssef , Ali M Hassan Inorganic Chemistry Department, National Research Centre, Dokki, Cairo, Egypt Inorganic Chemistry Department, National Research Centre, Dokki, Cairo, Egypt Inorganic Chemistry Department, National Research Centre, Dokki, Cairo, Egypt Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt

ABSTRACT Indium tin oxide (ITO) nanopowders of different compositions (In: Sn = 90:10, 70:30 and 50:50) were prepared by heat treatment (300–950°C) of mixed hydroxides of In(III) and Sn (IV). The hydroxides were obtained by the reaction of aq. NH3 with mixed aq. solutions of In (NO3)3 and SnCl4. Two Kinds of nanocrystalline indium tin oxide (ITO) powders with different crystal structures (rhombohedral and cubic) were prepared and examined. During sintering the rhombohedral ITO was transformed to cubic around 950

C. The lattice parameter was

calculated From XRD analysis is 10.104 A and the particle size range is 19.9 - 23.1 nm.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 53

SA

DR. ABDULLAH AL-SEHEMI


SYNTHESIS, BIOLOGICAL EVALUATION AND MOLECULAR MODELING STUDY OF SOME NOVEL 4(3 H)-QUINAZOLINONE DERIVATIVES AS ANTI-INFLAMMATORY AND ANTITUMOR AGENTS Abdullah G. Al-Sehemi , Ali S. Al-Shahri King Khalid University King Khalid University

ABSTRACT The synthesis of some new 4(3H)-quinazolinone derivatives and their biological evaluation as antitumor agents are investigated. These three quinazolinone analogs (5, 7, 10) could be considered as useful templates for future development to obtain more potent antitumor agents. Docking study into some of these compound (see bellow) has been made for derivatives of highest anti-inflammatory activity. Conformational analysis of the most active molecules using molecular modeling and QSAR techniques enabled the understanding of the pharmacophoric requirements for quinzolinone derivatives as antitumor agents.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 54

EG

MR. AHMED SOLIMAN

03:35

:

04:00

[email protected]

TREATMENT OF MICROBIAL INDUCED CORROSION OCCURED BY SULFATE REDUCING BACTERIA (SRB) IN CARBON-STEEL HEATERS OF THE NATURAL GAS PRESSURE REDUCTION STATIONS OF EGYPTIAN NATURAL GAS COMPANY (GASCO) BY USING ALDEHYDIC COMPOUNDS. Ahmed Soliman

ABSTRACT Many of GASCO's (Egyptian natural gas company) carbon steel heaters in the pressure reduction stations were corroded and some of them become out of service for maintenance although the input water quality was suitable and corrosion inhibitors were added periodically. By observation we found an indicating signs for the presence of the sulfate reducing bacteria (SRB) as a microbial induced corrosion (MIC). Some of these signs were: 1. Black sludge appeared in the water. 2. Black stones and red rust was found in the heater body. 3. H2S odor (rotten egg odor). 4. Pitting corrosion was observed. 5. Decrease in the PH value of the water. the heaters work at the atmospheric pressure and temperature range 60 to 80 degree centigrade. By taking samples from the rust layer and making chemical analysis in both GASCO chemical labs and micro analytical center at Cairo University, the analysis results show the presence of iron sulfides which constitute the main rust product form SRB activity. Therefore, GASCO prepared an environmentally friendly multifunction corrosion inhibitor (GASCO 1) and biocide with dose of 1oo ppm which consists of: 1. Oxygen scavenger compounds. 2. Amine compounds to form a protective film on metal surface as a passive layer. 3. Aldehydic compounds as a biocide. 4. Weak acids as scale inhibitors. (GASCO 1) was accepted from faculty of science Ain Shams University as an environmentally friendly corrosion inhibitor and now it is added periodically every 3 months to protect the heaters.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 55

EG

DR. MAGDA SAMATY

03:35

:

04:00

[email protected]

EVALUATING THE REDUCING PROPERTIES OF SOME ANTIHYPERTENSIVE AND ANTIBACTERIAL DRUGS, THROUGH THEIR REACTION WITH IRON (III) IONS. Magda M. Ibrahim , Abd El- Aziz El- Bayoumi , Maha A. Hegazy , Mohamed A. Abd ElGhani National Organization for Drug Control and Research, P.O. Box 29 Cairo, Egypt. Faculty of Pharmacy, Cairo University, Cairo, Egypt. Faculty of Pharmacy, Cairo University, Cairo, Egypt. National Organization for Drug Control and Research, P.O. Box 29 Cairo, Egypt.

ABSTRACT In this work the susceptibility of some antihypertensive and antibacterial drugs to oxidation were evaluated and compared through the application of a spectrophotometric method. Irbesartan (IRB), valsartan (VAL) and lisinopril (LSP) were selected as an example of antihypertensives, while two antibacterial drugs namely, cefixime (CFX) and cefprozil (CFP) were investigated. The applied method was based on the reaction of the cited drugs with iron (III) ions as an oxidizing agent. The resulted iron (II) ions reacted with o-phenanthroline forming the well-known highly stable orange-red colored chelate complex which exhibits an absorption maximum at 510nm. Different conditions were thoroughly studied and optimized. The reducing properties of the selected drugs were compared to each other (under the applied experimental conditions) and results show that these drugs act as reducing agents in the following order; CFX

CFP

IRB

LSP

VAL. The method was applied in a trial to investigate

the stability of these drugs in air and results showed that cefixime and irbesartan are very labile to autoxidation. The method was also applied for the quantitation of the cited drugs in their pure powdered forms and in pharmaceutical preparations. The relative standard deviations (RSD) were less than 2%, the accuracy and precision were investigated and satisfactory results were obtained.


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


CHEM - 56

EG

PROF. MOHAMED MOUSTAFA


PREPARATION AND CHARACTERIZATION NEW WATER SOLUBLE RESINS FOR SURFACE COATING M.Moustafa , H. Abd El-Wahab , F.abdel-Hai , A.M.Naser professor of organic chemistry Senior lecture of applied chemistry professor of organic chemistry professor of organic chemistry

ABSTRACT Waterborne coatings can be divided into the general classes, water-soluble or water-dispersible (colloidal dispersion and emulsions). The main object of the present investigation is to prepare new modified water-soluble polyesteramide resins, which combine the usefulness properties of both polyester and polyamide. The modification is brought about through the partial replacement of phthalic anhydride by methylene disalicylic acid (MDSA), in various conventional resin formulations which expected to improved the film performance and chemical mechanical charateristics .


.. .:: ::. ..



MON : 22-03-2010

HALL[POSTER]


03:35 : 04:00

CHEM - 8

EG

PROF. ZEINAB ABD EL-WAHAB

[email protected]

MIXED LIGAND COMPLEXES OF NICKEL (II) AND CERIUM (III) IONS WITH 4-(-3 -METHOXY-4-HYDROXYBENZYLIDENEAMINO) -1,3 DIMETHYL -2,6 PYRIMIDINE

-DIONE AND SOME NITROGEN / OXYGEN DONOR LIGANDS Zeinab H. Abd El –Wahab Chemistry Department, Faculty of Science(Girl's),Al-Azhar University, Nasr-City, Cairo, Egypt, P.O.Box 11754.

ABSTRACT Mononuclear mixed

ligand complexes

of Ni

(II)

and

hydroxybenzylideneamino)-1,3dimethyl-2,6pyrimidine-dione,

Ce (III)

with 4-(-3-methoxy-4-

2-aminopyridine

and

8-

hydroxyquinoline have been prepared. The elemental analysis, molar conductance, spectral (IR, mass and solid reflectance), magnetic moment measurements and thermal study were utilized to investigate the coordination behavior of these complexes. From the investigation data, all metal complexes have metal-to-ligand ratios of 1:1:1 and the mode of bonding are consistent with N- and O-donation suggesting monomeric octahedral and square planar structures. The thermal behavior of these complexes was investigated and the thermal decomposition pathways have been postulated showing that the final product is metal or metal oxide. Antibacterial and antifungal properties of the metal complexes have also been examined against Staphylococcus aureus (ATCC 25923), Streptococcus pyogenes (ATCC 19615), Pseudomonas fluorescens (S 97), Pseudomonas phaseolicola (GSPB 2828), Fusarium oxysporum and Aspergillus fumigatus. The highest antimicrobial activity was observed for the Ce (III) complex; [CeL(8-Oqu)(NO3) 2].1½H2O compared to the other mixed ligand complexes.


.. .:: ::. ..




EG

ASSOC.PROF. SAMEH ABOUL-FOTOUH


CONVERSION OF METHANOL ON CUO/H-MOR AND CUO/H-ZSM -5 CATALYSTS Sameh M. K. Aboul-Fotouh , Marwa M. I. Hassan Chemistry Department, Faculty of Education, Ain-Shams University Chemistry Department, Faculty of Education, Ain-Shams University

ABSTRACT This work is directed principally to maximize dimethylether (DME) production due to its industrial importance as a future diesel fuel. The high acidity and small pore opening of zeolites has a marked influence on the conversion of methanol and formation of DME. Catalysts containg 6%CuO supported on both zeolites give highest activities for DME production. However, the 6% CuO/ HMOR is more selective for DME production, while the 6%CuO/HZSM-5 is more selective for olefins (ethylene + propylene) formation. The higher acid site strength of CuO/HMOR is the principal factor for DME formation whereas olefins production is more activated on CuO/HZSM-5 due to its narrower pore volume.


.. .:: ::. ..




EG

03:35

:

04:00

ASSOC.PROF. MOHAMED A. SALEM [email protected]

PHOTODEGRADATION OF THREE FOOD DYES WITH FERRIOXALATE/H2O2/UV IN AQUEOUS SOLUTION Mohamed A. Salem , Shaker T. Abdel-Halim , Abdel-Hamid M. El-Sawy , Ahmed B. Zaki Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt

ABSTRACT Dyes are extensively used in textile, drugs, cosmetics, and food industries. They represent one of the largest groups of pollutants in wastewater produced from these industries due to the dying and finishing operations. The wastewater discharged in rivers or public sewage plants are highly colored and contaminated. The colored effluents upset the biological activity in aquatic life, owing to stopping the reoxygenation capacity of the receiving revisers and cut-off sunlight. In the present work the ferrioxalate/H2O2/UV-366nm system was tested as an advanced oxidation process (AOP) for the degradation of food dyes allura red, ponceau 4R and carmosine in aqueous solution. The degradation process was monitored spectrophotometrically at room temperature. The concentration of dye, ferrioxalate, and hydrogen peroxide played a significant effect for the degradation rate. The rate increased with the increase in ferrioxalate concentration, but decreased at high concentration of both the dye and H2O2. An inhibition in the rate was also observed by the addition of chloride or sulfate ions. The maximum rate was obtained at pH 3.5. The activation parameters revealed an entropy controlled reaction. The current reaction system can therefore be considered a promising model for solving some of the environmental problems that face these industries.

Geological Sciences


.. .:: ::. ..


Geology 190 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC04 ( 1 )

GEO - 1

EG

PROF. MOHAMED HASSAAN AWAD

09:00

09:30

[email protected]

CLASSIFICATION AND ORIGIN OF THE CHAT M. H. Awad Dept. of Geology, Faculty of Science, Al-Azhar Univ. Cairo, Egypt.

ABSTRACT

:


.. .:: ::. ..


Geology 191 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC04 ( 2 )

GEO - 3

EG

DR. OSAMA ABDALLA

09:30

:

09:45

[email protected]

PALEOGENE HYRACOIDS FAUNA OF JEBEL QATRANI, FAYIUM, EGYPT M. H. Awad , O. A. Abdalla , M. C. Lamanna , and N. I. Mahmoud Dept. of Geology, Faculty of Science, Azhar Univ. [email protected] Egyptian Mineral Resources Authority. Cairo, Egypt. [email protected] Carnegie Museum of Natural History, USA. [email protected] Egyptian Mineral Resources Authority

ABSTRACT Jebel Qatrani Formation of northern Egypt has produced Afro-Arabia's primary record of Paleogene Mammal, including Hyracoids. The fossils described here come from a series of quarries within the upper and lower sequences of Jebel Qatrani Formation.


.. .:: ::. ..


Geology 192 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC04 ( 3 )

09:45 : 10:00

GEO - 6

EG

MR. ABUOL FETOUH ABD EL-KARIEM

[email protected]

PETROLOGICAL AND PETROCHEMICAL STUDIES OF WADI SEIH GRANITES, SOUTHWESTERN SINAI, EGYPT El-Mezayen, A. M.A , Hassan, I. S. , Abd El Karim, A. M Geology Department, Faculty of Science, Al Azhar University, Egypt. Geology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt Academy of Scientific Research and Technology , Cairo, Egypt

ABSTRACT The granitoids of Wadi Seih area are classified into older and younger granites according to their field field relationship and composition. The older granites are represented by granodiorite, quartz monzodiorite and tonalite and have more than one textural forms such as myrmekitic and poikilitic textures which reflects variations in crystallization conditions. They were subjected to low grade metamorphism as indicated by the alteration of hornblende and biotite to chlorite. They have most of the mineralogical features of the I-type granites. The younger

granites

are

mainly

represented

by

syenogranite

which

has

hypidiomorphic

equigranular and abundant of microperthitic textures. They have most of the mineralogical features of the A-type granites. It is composed mainly of K-feldspar, plagioclase, quartz and biotite. Zircon, allanite and opaques are accessories. They are considered as subsolvus granite and have two separate feldspars. They contain biotite together with muscovite which may suggest the derivation of this granite from peraluminous magma. The presence of micrographic and granophyric textures indicate the shallow emplacement of this granite. Based on their geochemical investigations, the studied older granitoids exhibit many features of the I-type granitoids and belong to the volcanic-arc granites. They have high Na2O content (3.67% average), and posses metaluminous character and have high Sr concentration (530 ppm, average). The enrichment in the LIL elements depletion in HFS elements and low HFS/LIL ratios, indicate a mantle derived magma with some crustal involvement in a subduction related environment. They were emplaced at deep level at more than 30 Km. The studied younger granitoids data points belong to the within-plate granitoids. The significant enrichment of Rb and Th compared to Nb indicates crustal involvement in the magma generation. They were emplaced at shallow level between 20-30 Km


.. .:: ::. ..


Geology 193 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC04 ( 4 )

GEO - 7

EG

DR. EL-SAWY KAMAL

10:00

:

10:15

[email protected]

GEOENVIRONMENTAL STUDIES BY USING REMOTE SENSING DATA ON LAKE MANZALA – EGYPT. M. H. Bekiet , E. K. El-Sawy , Abd El-Motaal, E , A. A. Orabi , Abd El Mohsen El Dabaa Geology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt Geology Department, Faculty of Science, Al-Azhar University (Assiut branch), Assiut, Egypt Geology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt Geology Department, Faculty of Science, Al-Azhar University (Assiut branch), Assiut, Egypt

ABSTRACT Lake Manzala is located in the northeastern part of the Nile Delta. Its northern border is a narrow sandy fringe which separates the lake from the Mediterranean Sea. It is bordered by the Suez Canal from the east, Damietta Branch of the Nile from the west and cultivated lands from the south. The study area lies between latitudes 31° 00´ and 31° 30´N and longitudes 31° 45´ and 32° 20´E. It is a gained to the Mediterranean Sea by narrow channels (Ashtum Al Gamil, Ashtum Al-Boghdadi and Ashtum Al-Dieba). The authors are going to explain the reason of decreasing size of the lake area by using the remote sensing techniques. The satellite images are use in this search for making the change detection are TM 1984 and ETM+ 2000. The search improved that there are several factors affecting the environmental manor such as continuity of degradation and deposition, the accumulation of vegetation remnants, the blowing of sand, natural and man produced desiccation, the closing of some irrigation channels, and the construction of levees.


.. .:: ::. ..


Geology 194 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC04 ( 5 )

GEO - 8

EG

DR. ABLA RAGAB

10:15

:

10:30

[email protected]

CHEMICAL AND RADIOACTIVITY CHARACTERIZATION OF MINERALIZED PEGMATITE FROM ABU RUSHEID AREA, SOUTH EASTERN DESERT, EGYPT Dr.Abla Ragab Nuclear Materials Authority of Egypt, Kattamiya, Cairo

ABSTRACT The mineralized pegmatite in Abu-Rushied area was analyzed geochemically by the inductively coupled plasma-mass spectrometry (ICP-MS) to determinate the content of the major, trace elements and the rare earth elements. The mineralized pegmatite is trending NNW-SSE with dip of about 10-30° due WSW. It is emplaced parallel to foliation and banding of the cataclastic country rocks. The studied pegmatite shows a zonal distribution from the barren core to mineralized wall-zone in the metals; Nb, Ta, Zr, Hf, Th, U, Y and Ga. This pegmatite can be classified as rare metals enriched pegmatite with the geochemical signature; Rb, Li, Nb > Ta, Th, U, Zr, Ga, Y and F and can be correlated with the mixed (LCT + NYF) family displaying NYF > LCT characteristics. This pegmatite contains rare metals-bearing minerals such as zircon, rutile, columbite-tantalite, samarskete and other REE and Th minerals. Secondary uranium minerals have also been encountered. Cassiterite, chlorite, deep violet fluorite, calcite, goethite, hematite, pyrite, magnetite, zinnwaldite, phlogobite, and amazonite are the main accessory minerals. The mineral composition supports the NYF nature of this pegmatite. The studied pegmatite is highly differentiated within plate, NYF-type and characterized by high FeO/MgO ratio with high concentration of Nb, Y, Zr, Th, U, REE (except Eu), and Ga. It was derived from F-enriched proterozoic crustal source depleted in Cs, B and P. It is peraluminous and highly fractionated postorogenic A-type, emplaced within plate environment and had been affected by hydrothermal alteration. The pegmatite displays clear M-type tetrad effect with increasing isovalents ratio; Nb/Zr, Y/Ho accompanied with an increase in the content of SiO2 and Rb/Sr ratio. The ratio of the isovalents Zr/Hf does not follow the role. The pegmatite has a prominent negative Eu anomaly and excessively low K/Rb ratio. The radioactivity of the studied pegmatite is related to both uranium and thorium occurring in zircon, allanite, xenotime, monazite, thorite, uranothorite, thorianite, smmarskite, coulombite, fluorite and autonite. The potential anomalous radioactivity in the pegmatite of Abu Rushied is attributed to both magmatic and hydrothermal processes.


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Geology 195 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 1 )

GEO - 2

EG

PROF. MOHAMED HASSAAN AWAD

10:30

11:00

[email protected]

REVIEW OF THE EOCENE SEQUENCE IN EGYPT M. H. Awad Dept. of Geology, Faculty of Science, Al-Azhar Univ. Cairo, Egypt.

ABSTRACT

:


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Geology 196 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 2 )

GEO - 9

EG

DR. THARWAT ABDELHAFEEZ

11:00

:

11:15

[email protected]

EVALUATION OF THE SHALLOW BED ROCK ALONG THE QUATTAMIYA_SUKHNA HIGHWAY,CAIRO _SUEZ AREA, EGYPT HASSAN EL KADI , THARWAT H.ABDELHAFEEZ , AHMED KOTB , HOZAYEN A. HOZAYEN , SAID A. HABEB Geology Department, Al-Azhar University, Cairo, Egyp Geology Department, Al-Azhar University, Cairo, Egyp Geology Department, Al-Azhar University, Cairo, Egyp Engineering, Civil Engineering Department, Cairo University Engineering, Civil Engineering Department, Cairo University Orascom Company

ABSTRACT Several geophysical investigations were carried out at Quattamyia - Sukhna highway, which is passing through the study area to estimate the effectiveness of these geophysical methods for assisting in site characterization. The prevailed subsurface structures such as fractures, faults, voids, cavities and other shallow features are affecting the Eocene limestone bedrock of the study area. These systems include ground penetrating radar, and electrical resistivity imaging. The objective techniques of this study is to determine which method or methods can be best used to understand the subsurface geologic framework of a site under various conditions. Of particular interest is the identification of the best geophysical system, with regards to instrumentation, field procedures, analysis and illustration of output data for identifying and mapping materials that would be appropriate for transportation construction projects


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Geology 197 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 3 )

GEO - 10

JO

DR. HASSAN HASSAN

11:15

:

11:30

[email protected]

GEOCHEMISTRY, MINERALOGY AND ORIGIN OF CRETACEOUS CHERT, AREA WALA, CENTRAL JORDAN Alfugha, H. and , Awad, H.A. University of Jordan, Department of Geology, Amman, Jordan Dept. of Geology, Al Azhar Univ. Cairo, Egypt

ABSTRACT The Upper Cretaceous cherts in central Jordan are widely distributed on western margin of Arabian Plate. The characteristic structures of these cherts are bedded, concretion and brecciated structure. The studied cherts are very simple in chemical composition with contents of siliceous minerals exceeding 80wt.% and those of other mineral species being very low. The total content of trace elements is considerably variable, and most trace elements are low. Petrologic and geochemical evidence suggest a hydrothermal origin of the studied chert. The product of hydrothermal processes and the submarine hydrothermal are the main source of the silica forming these cherts.


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Geology 198 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 4 )

GEO - 11

JO

DR. HASSAN HASSAN

11:30

:

11:45

[email protected]

CAVES IN THE DESERTS OF SAUDI ARABIA M. Hassaan Awad , M. Bassyoni , M. El Shanty Geology Dept. AL Azhar University , Egypt Geology Dept. King Abdel Aziz University, Saudi Arabia Geological Survey, Saudi Arabia

ABSTRACT The caves of Saudi Arabia are a natural resource, In 2000, Saudi of mapping and studying already-known

limestone

caves

and

Geological

Survey

initiated

Subproject

4.1.1.2.1

Reconnaissance of underground cavities (caves) in Phanerozoic rocks with the objectives reconnoitring the Kingdom to discover new karst area which might host caves. In 2001, SGS researchers discovered that the kingdom's 89,000 square kilometre of lava fields also contain caves, Studies revealed that the limestone cav are important for their past and present role in recharging the country aquifers, The volcanic caves proved to host so many rare secondary minerals that a Saudi lava tube is now included among the ten mineralogical most important lava caves in the world. It must, however, be stated that caves are more than a geological resource for the country. Saudi Arabia's caves were found to contain bones, artefacts and living creatures of interest to Paleontologists, biologists and archeologists . Cave formations and sediments were found to contain important information for climatologists on the past weather patterns of the Arabian peninsula and the process of desertification. A study on Show Caves demonstrated that Cave Tourism could be profitably carried out in the kingdom. Finally, the importance of knowing the size and location of caves cannot be ignored. While the usefulness of this previously unsuspected resource, was found to be wide and varied.


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Geology 199 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 5 )

GEO - 12

EG

MR. AHMED ALMOAZAMY

11:45

:

12:00

[email protected]

PETROLOGY, GEOCHEMISTRY AND ORIGIN OF FELSIC DYKE SWARMS IN NE AQABA COMPLEX-JORDAN Hassan Al-Fugha , Hatem El-Desoky Jordan University, Department of geology, Amman, Jordan Al-Azhar University, Faculty of Science, Geology Department, Egypt

ABSTRACT The present work deals with the geologic setting, petrographical and geochemical study of the Late-Precambrian magmatic rocks especially the felsic dyke swarms of northeast Aqaba complex in South Jordan. Northeast Aqaba complex represents one of the most significant regions in the South Jordan basement. The basement rocks in the studied region are composed of schists, gneisses, migmatites, metagabbros, diorite and granite. It is invaded by post-orogenic dyke swarms. The post-orogenic dyke swarms have been recognized as felsic dykes of dacite, rhyodacite and rhyolite composition. They are composed mostly of plagioclase, K-feldspar, quartz, hornblende with minor zircon and apatite as accessory and chlorite as secondary minerals. Chemically, these felsic dykes are enriched in potassium and are of peraluminous nature and enriched in compatible elements especially in the large ion lithophile elements viz; K, Rb and Ba. They are formed by partial melting of crustal rocks. The felsic dykes can be related to an intercontinental setting that was accompanied by a chemical evolution of the extensional movements which are already known from other area in northeast portion of the Arabian-Nubian Shield.


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Geology 200 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 6 )

GEO - 13

EG

DR. ABLA RAGAB

12:00

:

12:15

[email protected]

RARE EARTH ELEMENTS CHEMISTRY IN MICA-LAMPROPHYRE DYKE IN SIKAIT, SOUTH EASTERN DESERT, EGYPT IBRAHIM, M.A , RAGAB, A.A Nuclear Material Authority Nuclear Material Authority

ABSTRACT Sikait lamprophyres are emplaced mainly in NW-SE and NE-SW trends cutting porphyritic monzogranite and metamorphosed sandstones (MSS). These lamprophyres are altered, show porphyritic and poikilitic texture with olivine, clinopyroxene, clinoamphibole phenocrysts in groundmass of clinopyroxene, clinoamphibole, opaque and lithium micas. The alteration products are represented by clinoamphibole (tremolite-actinolite, uralite and hornblende), carbonate, epidote, chlorite, iddingist, clay minerals, limonite and serpentine. Major, trace elements and rare earth elements were determined by ICP-MS. Petrochemistry, these lamprophyres can be classified as alkaline lamprophyre and its source magma rich in LREE and LILE. Silica contents range from 41.65% to 50.88%. The samples have Na2O>K2O. The studied lamprophyre dykes are enriched in LILE, LREE and elevated HFSE contents but strongly depleted in compatible elements such as Cr and Ni relative to primitive mantle. Lithium mica in lamprophyres consequence of an enriched mantle source. Sikait lamprophyres have moderate Zr/Hf (35.6-52-8) and Nb/Ta (20.5-22.5) ratio. Most of these features are attributed to the origin of these dykes from metasomatised mantle affected by subductionrelated fluid. These lamprophyres are compositionally similar to Salu Lamprophyres, eastern China. Sikait Lamprophyre samples have high LREE (320-419 ppm) relative to HREE (2033ppm) with ratios (LREE/HREE = 11.6-18.7) with no Eu anomaly (Eu/Eu*=0.9=1.04) The common presence of positive Ce anomaly (Ce/Ce*=1.04) in lamprophyre samples suggests the oxidizing condition under which the REE's were precipitating due to the common occurrence of apatite. The result magma had not contamination with continental crust. The magma produced from metasomatised mantle affected by subduction-related fluid.


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Geology 201 286

TUE : 23-03-2010

HALL[D]

ORAL - SEC09 ( 7 )

GEO - 14

EG

DR. ABLA RAGAB

12:15

:

12:30

[email protected]

GEOCHEMISTRY AND RADIOACTIVITY OF MINERALIZED PEGMATITE FROM ABU RUSHEID AREA, SOUTH EASTERN DESERT, EGYPT RAGAB A,A. NUCLEAR MATERIAL AUTHORITY

ABSTRACT The mineralized pegmatite in Abu-Rusheid area was analyzed geochemically by the inductively coupled plasma-mass spectrometry (ICP-MS) to determinate the content of the major, trace elements and the rare earth elements. The mineralized pegmatite is trending NNW-SSE with dip of about 10-30 due WSW. It is emplaced parallel to foliation and banding of the cataclastic country rocks. The studied pegmatite shows a zonal distribution from the barren core to mineralized wall-zone in the metals; Nb, Ta, Zr, Hf, Th, U, Y and Ga. This pegmatite can be classified as rare metals enriched pegmatite with the geochemical signature; Rb, Li, Nb > Ta, Th, U, Zr, Ga, Y and F and can be correlated with the mixed (LCT + NYF) family displaying NYF > LCT characteristics. This pegmatite contains rare metals-bearing minerals such as zircon, rutile, columbite-tantalite, samarskete and other REE and Th minerals. Secondary uranium minerals have also been encountered. Cassiterite, chlorite, deep violet fluorite, calcite, goethite, hematite, pyrite, magnetite, zinnwaldite, phlogobite, and amazonite are the main accessory minerals. The mineral composition supports the NYF nature of this pegmatite. The studied pegmatite is highly differentiated within plate, NYF-type and characterized by high FeO/MgO ratio with high concentration of Nb, Y, Zr, Th, U, REE (except Eu), and Ga. It was derived from F-enriched proterozoic crustal source depleted in Cs, B and P. It is peraluminous and highly fractionated postorogenic A-type, emplaced within plate environment and had been affected by hydrothermal alteration. The pegmatite displays clear M-type tetrad effect with increasing isovalents ratio; Nb/Zr, Y/Ho accompanied with an increase in the content of SiO2 and Rb/Sr ratio. The ratio of the isovalents Zr/Hf does not follow the role. The pegmatite has a prominent negative Eu anomaly and excessively low K/Rb ratio. The radioactivity of the studied pegmatite is related to a) uranium mineral (autonite), b) thorium minerals (thorite, thorianite and uranothorite) and c) accessories minerals (zircon, allanite, xenotine, monazite, fluorite, columbite and samarskite). The potential anomalous radioactivity in the pegmatite of Abu Rusheid is attributed to both magmatic and hydrothermal processes.


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Geology 202 286

WED : 24-03-2010

HALL[POSTER]


GEO - 4

EG

MR. AHMED ALMOAZAMY


GEOLOGY AND GEOCHEMISTRY OF WADI AL OBEIYID AND AIN DALLA AREA, FARAFRA OASIS, WESTERN DESERT, EGYPT Ahmed Abdul Rahman Almoazamy , M. H. Awad Mineral Resources Authority Dean of Faculity of Scince- Al Azhar University

ABSTRACT The present work is concerned principally with studying of the stratigraphy, geochemistry and depositional environments of the rock units at the study area which located at the Western Desert, to the northwest of Farafra Oasis, between longitude 27 00\ 00\\ - 28 00\ 00\\ E and latitude 27 00\ 00\\ - 27 30\ 00\\ N. The exposed rock units at the study area can be classified into seven stratigraphic rock units arranged from oldest to youngest as: El Hefhuf Formation, Khoman Chalk which change laterally in some places into argillaceous facies of Dakhla Shale. Tarawan Formation, Esna Shale, Ain Dalla Formation anf Farafra Limestone. Geochemical study based on the chemical analysis of the rock sequence helped in interpreting the behavior and abundance of the major and trace element and its mutual relationship. The measured major constituents are SiO2, Al2O3, FeO, CaO, MgO, Na2O, K2O and LOI., while the measured trace constituents are; V, Cr, Co, Ni, Zn, Mn, Sr and Ti The result of study of the lithology, microfacies association and faunal content of the different formations indicated that: The lower part of the El Hefhuf Formation depo-sited in a shallow marine to coastal marine environment with floods or other acci-dental causes of fluctuation in supply that are seasonally controlled while the upper part deposited in swampy tropical period of deposition. The Lower part of the Khoman Chalk deposited in an open marine environment while the upper part deposited in a shallow marine environment. The Tarawan Chalk deposited in a shallow marine environment. The lower part of the Esna Shale deposited in a pelagic environment, whereas the upper part has a different litho and microfacies suggesting a shallow agitated outer shelf environment. The argillaceous limestone part of the Ain Dalla Formation deposited in a shallow water outer shelf environment, while the chalky limestone part deposited in a warm shallow subtidal environment. The Farafra Limestone were deposited in a shallow subtidal environment.


.. .:: ::. ..


Geology 203 286

WED : 24-03-2010

HALL[POSTER]


GEO - 5

EG

PROF. AHMED KOTB


DRAWBACKS OF THE LATENESS OF THE ROLE OF GEOLOGY AND GEOPHYSICS IN THE CONSTRUCTION OF NEW CITIES Kotb, A , F. De Smedt , A.A. Hassan , M. Taha Department of Geology, Faculty of Science, Al Azhar University, Cairo, Egypt Department of Hydrology and Water Resources Engineering, Vrije Universiteit Brussel, Belgium Department of Irrigation and Hydraulics, Faculty of Engineering, Ain Shams University, Egypt Department of Soil Mechanics, Faculty of Engineering, Ain Shams University, Egypt.

ABSTRACT Nowadays the Egyptian governmental approach toward geological and geophysical role before constructing new cites had been changed. This new policy is a good opportunity and challenge for geological departments in Egypt. Previous policy of lateness of the role of geology and geophysics in the construction of new cities causes some drawbacks such that happened in El Obour city. El Obour is a newly constructed city in the desert located 25 km from Cairo. The city covers almost 200 km2 and is characterized by significant variations in topography and geology. These variations play an important role in drainage of sewage and irrigation water from the elevated part of the city at 173 m to the mainly sandy dune bed rock in the lower region at 30 m elevation. In these lower parts, problems arise because of water logging and groundwater mounding. Geophysical techniques, in particular resistivity soundings, have been applied to analyze the subsurface conditions in the study area. One hundred and six vertical electrical soundings have been conducted with a Schlumberger configuration to analyze the type and extend of the ground layers. GIS packages were used as an interface to derive a set of vector and raster maps that show the subsurface characteristics. Low electrical resistivity values of 5 to 15 m are identified as corresponding to clay, clayey silt or clayey sand layers that impede infiltration and restrict ground water drainage. Some of these fan shaped clay layers might reflect old delta branches of earlier geologic times. The distribution of the clayey layers clearly coincides with the areas facing water logging problems. The closer these clay layers are situated near the surface and the larger their thickness the more water logging is observed. Hence, the distribution of these clay layers can be a key factor to design dewatering strategies. Additionally, groundwater flow can be modeled using the obtained resistivity and lithologic maps to estimate hydraulic conductivities and derive aquifer and aquitard properties. In combination with hydrologic data, this will enable to quantify soil water infiltration and groundwater seepage and to design drainage systems. More studies concerning geology, geography, hydrogeology and other related fields are recommended before constructing such new cities.


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Geology 204 286

WED : 24-03-2010

HALL[POSTER]


GEO - 15

EG

DR. AHMED SAAD


CHARACTERIZATION AND UTILIZATION OF THE UPPER CRETACEOUS – LOWER EOCENE OF QUSEIR AREA EASTERN DESERT, EGYPT Ahmed Mahmoud Saad , Nabeil Abd Elhafze , Hamza abbas** * Geology Department, Faculty of Science, Al-Azhar University Geology Department, Faculty of Science, Al-Azhar University Geological Survey of Egypt, Cairo , Egypt

ABSTRACT The present paper is a comparative study of the physical, mineralogical and mechanical properties of the rocks which belong to the Upper Cretaceous – Lower Eocene succession of Quseir area. Stratigraphically the area consists of seven formations from base to top : Nubia Sandstone, Quseir Variegated Shale, Duwi Formation, Dakhla Shale, Tarawan Chalk, Esna Shale and Thebes Formation. From the petrographic analysis 1-Duwi Formation is composed of , Quartz Arenite, Dolomite,Phosphatic biomicrite, Sandy Phosphorite, Phosphorite. 2 -Thebes Formation consists of Biomicrite microfacies associations: The X-Ray diffraction analyses of Duwi Formation indicate that it composed completely of Quartz and Thebes Formation composed of calcite with trace of quartz and dolomite. The mechanical properties of studied samples indicated of : -In Duwi Formation the pore space of sandstone is filling by glauconite which made hard rock. The limestone of Thebes Formations are poor because the limestone is pure or filled by argillaceous materials, but in the upper layer of Thebes Formation, the limestone has chert bands which made hard rock.

Biology (Botany, Zoology and Microbiology)


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Botany 205 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 1 )

BOT - 1

LY

DR. KHALIFA MOHAMED

01:00

:

01:15

[email protected]

GENES EXPRESSION IN EPIDERMIS AS WELL AS IN LEAVES OF ARABIDOPSIS UNDER COLD STRESS. KHALIFA SULEIMAN MOHAMED 1 AND ROGER.S PEARCE

2 1 UNIVERSITY OF AL-JABAL ELGHARBI LIBYA. 2 UNIVERSITY OF NEWCASTLE UPON TYNE UNITED KINGDOM. Khalifa Suleiman Mohamed , Roger.S Pearce University of Al-Jabal Elgharbi Libya University of Newcastle upon Tyne United Kingdom.

ABSTRACT The epidermis has an important role in plant physiology. How does it acclimate to cold? In this work, I compared gene expression in the epidermis and whole leaf of Arabidopsis in the cold. all the genes were expressed in epidermis as well as leaves, but the levels were mostly higher in leaves than epidermis in the cold. The level of CBF1 was more highly expressed in epidermis at time 0 and 2 h, but in the leaves was expressed by 2 h in the cold. However, CBF3 was earlier expressed in epidermis but was later in leaves in the cold but, the level of COR15a was more highly expressed in leaves than in epidermis. There were similarities and differences in the responses of leaves and epidermis. The pattern of CBF1 and CBF3 expression was different in different tissues and at different times in the cold. Epidermis as well as leaf expressed nearly all genes tested in this work.


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Botany 206 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 2 )

BOT - 3

EG

ASSOC.PROF. WAEL KASEM

01:15

:

01:30

[email protected]

SEED COAT MORPHOLOGY AND CYTOLOGICAL STUDIES IN SOME TAXA OF THE GENUS CHENOPODIUM L. (CHENOPODIACEAE) KASEM, W. T, EL-KHOLY, M. A, A. FARGHAL, GAAFAR. A. S. Kasem, W. T , El-Kholy, M. A , A. Farghal , Gaafar. A. S

ABSTRACT Taxonomical studies using seed coat scanning and cytological data on fifteen taxa belonging to 9 species of the genus Chenopodium, L. namely C. album, C. ambrosioides, C. amranticolor, C. bonus-henricus, C.ficifolium, C. glaucum, C. murale, C. quinoa and C. strictum have been studied. Seed surface of the genus Chenopodium was investigated by Scanning Electron Microscopy (SEM). In addition cytological data such as chromosome count and nucleic acid techniques have been compared. Data of seed coat morphology and cytological data were analyzed by STATISCA program package using the UPGMA clustering method. The obtained results showed that the studied taxa have been classified into different distinct taxonomical levels.


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Botany 207 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 3 )

BOT - 6

SA

DR. YAHYA MASRAHI

01:30

:

01:45

[email protected]

ENHANCED WATER ECONOMY AND CAM IN THE DESERT STEM SUCCULENT CARALLUMA ACUTANGULA IN SOUTHWESTERN SAUDI ARABIA Yahya S. Masrahi , Mohammed N. Al-Yemeni Jazan University King Saud University

ABSTRACT The desert stem succulent Caralluma acutangula (Decne.) N.E.Br. has enhanced water economy due to anatomical and biochemical features that enable it to tolerate harsh conditions prevailing in its native habitat. Juvenile seedlings have high surface : volume ratio (S/V ratio) and exhibit the C3 pathway of photosynthesis. These seedlings adopt the C3 pathway in order to benefit from favorable conditions and water available during the short wet season for fast growth and establishment. Mature plants, on the other hand, have a very low S/V ratio of 0.5, a very high ratio of chlorenchyma area : total surface area (AChl/A ratio) of 256, and exhibit crassulacean acid metabolism (CAM) pathway of photosynthesis in order to tolerate the hot and dry conditions prevailing during the long dry season. Mature plants also have a low stomatal frequency and a cortex containing collapsible hydrenchyma that provides constant flux of water to the chlorenchyma during the dry season. Marked diurnal changes of cell sap titratable acidity together with concomitant changes of cell sap osmotic potential in mature plants revealed the presence of CAM. However, lower oscillations of these parameters observed during the long dry season denoted induction of CAM cycling.


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Botany 208 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 4 )

BOT - 10

EG

MS. FATMA HAMADA

01:45

:

02:00

[email protected]

PHYTOCHEMICAL, MACRO AND MICRO-MORPHOLOGICAL ASPECTS OF NATURALIZED EXOTIC SOLANUM DIPHYLLUM L. Fatma A. Hamada , Arafa I. Hamed , Mohamed G. Sheded , Abdel-samea M. Shaheen South Valley University, Faculty of Science, Botany Department, Aswan, Egypt. South Valley University, Faculty of Science, Botany Department, Aswan, Egypt. South Valley University, Faculty of Science, Botany Department, Aswan, Egypt. South Valley University, Faculty of Science, Botany Department, Aswan, Egypt.

ABSTRACT Solanum L. is the largest genus in the family Solanaceae and one of the most species-rich genera of the flowering plants. Generally, members of Solanaceae are of great economic importance. Various parts of many species belonging to the genus Solanum are widely used medicinally throughout the world and considered an extremely important source of drug therapy. In the current study several saponins were isolated from 80% methanol fraction of various parts of Solanum diphyllum L., their structure were elucidated by advanced spectroscopy methods such as 1D and 2D spectroscopy. Its biological activity was tested. The morphological and anatomical features of Solanum diphyllum were investigated. The present study is considered as an important study on this species.


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Botany 209 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 5 )

BOT - 11

EG

MS. FATMA HAMADA

02:00

:

02:15

[email protected]

ECOLOGICAL FACTORS AFFECTING SOLANUM DIPHYLLUM L. SEED GERMINATION, A PROMISING MEDICINAL PLANT. Mohamed G. Sheded , Fatma A. Hamada , Arafa I. Hamed , Abdel-samea M. Shaheen South Valley University, Faculty of Science, Botany Department, Aswan, Egypt South Valley University, Faculty of Science, Botany Department, Aswan, Egypt South Valley University, Faculty of Science, Botany Department, Aswan, Egypt South Valley University, Faculty of Science, Botany Department, Aswan, Egypt

ABSTRACT The use of herbal medicine can play a key role in healing most of the serious diseases. In vitro study of crude extract effect of different parts of Solanum diphyllum upon three different cancer cell lines showed a comparable decrease in the cell survival fraction. The current study aims to know the most appropriate conditions that can increase Solanum diphyllum germination rate. Seed germination requirements of this plant were studied. The effect of different temperature degrees on germination rate of Solanum diphyllum was investigated and the response to drought and salinity stresses which was directly related to the treatments' concentration as detected.


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Botany 210 286

WED : 24-03-2010

HALL[POSTER]


01:00 : 01:25

BOT - 2

IQ

DR. HANA AL-SALEH

[email protected]

THE EFFECT OF MICROWAVES ON THE GROWTH OF BLACK SEED NIGELLA SATIVA L. SEEDLINGS AND INITIATION OF CALLUS FROM IT Hana S. AL-Saleh , Rehab A. AL-Baker , Osama M.S. AL-Naime Biology Department / College of Science / Mosul University /IRAQ Biology Department / College of Science / Mosul University/IRAQ Biology Department / College of Science / Mosul University /IRAQ

ABSTRACT The research included the effect of microwaves on Nigella sativa seedling ,which grown on the culture media for germination of seeds and seedling growth. This was done by exposure of seeds to microwaves for different periods, the results showed that the germination percent of seeds exposed to microwaves for (100) minutes, was nearly that of the seeds in the control treatment ,it reached to 90%,94% respectively ,this was after 7days from culture. Germination percent in the other treatments ranged between 68%-88%,also the mean of seedlings length which grown from seeds exposed to microwaves for 20 and 120 minutes reached 2.5 and 2.4 cm respectively ,and so it is closely to 2.6 cm for the control treatment. On the other hand, the results cleared that the stem explants of seedlings containing a node , exposed to microwaves, varied by their response for callus initiation, that is after 20 days from culture. The explants in the control treatment showed good (+++) response ,while in the other treatments where explants exposed to microwaves showed less (++) response than the control .except that exposed for (100)minutes ,the response was similar to that of the control. The fresh weight of callus grown for 45 days from stem explants exposed to microwaves for 20 and40 minutes were 2.0 and 2.1 g respectively compared with 2.3 g for the control. In spite that the maximum fresh weight of callus gained in this study which was 6.8 g after 70 days growth from explants exposed for 80 minutes to microwaves ,but it is still less than 8.5 g for the control.


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Botany 211 286

WED : 24-03-2010

HALL[POSTER]


BOT - 5

EG

ASSOC.PROF. ABD EL-MONEM SHARAF


ROLE OF GIBBERELLIC ACID IN ABOLISHING THE DETRIMENTAL EFFECTS OF CD AND PB ON BROAD BEAN AND LUPIN PLANTS. Abd El-Monem M. Sharaf , Ibrahim I , Mahmoud

ABSTRACT This work describes the changes in photosynthetic pigments, soluble carbohydrates, proteins and activities of certain enzymes of both broad bean and lupin plants in response to heavy metals (Cd or Pb), gibberellic acid (GA3) and their interactions. Significant reduction in contents of chlorophylls, soluble carbohydrates, soluble proteins were recorded in tested plants due to the treatment with either Cd or Pb. All applied treatments greatly affected the activities of amylases, proteases, catalases and peroxidases in both broad bean and lupin plants. Generally, it could be concluded that GA3 have (to some extrent) a beneficial regulatory role in plants grown under both Cd and Pb polluted conditions.


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Botany 212 286

WED : 24-03-2010

HALL[POSTER]


BOT - 7

EG

MS. MARWA AWAD

01:00

:

01:25

[email protected]

FLAVONOIDS AND PHENOLIC CONSTITUENTS OF MORICANDIA SPECIES IN EGYPT Inas Abd El-Moatti Mohammed, , Nabil H.E.Khamis. , Samira Kamal Tahoon , Marwa Abd El-Fatah Awad Desert research center National research center Faculty of Science-Al-Azhar University Desert research center

ABSTRACT The chromatographic investigation of the flavonoid and phenolic acid in Moricandia species growing in Egypt (namely M. sinaica and M. nitens were collected from Wadi Feiran Saint Catherine, south Sinai and Agiba, 20 km west of Marsa-Mattruh respectively), result in identification of 10 compounds (Isorhmentin , Isorhmentin -3-O-glucoside, Quercetin , kampferol,

Rutin

Isorhamnetin 3-Oquercetin 3-O-

,

gallic

acid,

kaempferol

3-O-

-rutinoside-7-O- -D

-rutinoside -7-O- -D glucopyronoside ,kaempferol- 3-O-

glucopyronoside, -glucoside and

- glucoside). The phenolic compounds were separated, purified by using

Sephadex LH-20 and Silica gel columns and identified using Rf-values, UV and 1H-NMR spectral analysis.


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Botany 213 286

WED : 24-03-2010

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BOT - 8

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MS. MARWA AWAD

01:00

:

01:25

[email protected]

CHEMICAL COMPOSITION OF MORICANDIA SPECIES IN EGYPT. Nady A. E.Ghanem , Inas Abd El-Moatti Mohammed , Samira Kamal Tahoon , Marwa Abd El-Fatah Awad Faculty of Science-Al-Azhar University Desert research center Faculty of Science-Al-Azhar University Desert research center

ABSTRACT Mineral composition of Moricandia species ( M.sinaica and M. nitens) were studied its observed that, the highest percentage of summation of minerals determined and inorganic matter (ash content) were recorded at autumn where the lowest were recorded at summer , Crude fibre was 42.11% at autumn and 54.3 % at summer, total carbohydrates were 4.8 % and 5.0 % , total protein was 39.3 % and 26.25 % , total lipids were 2.69 % and 1.25 % , total flavonoids was 1.4 % and 0.7 %, total saponins was 10.9 % and 1.73 % at winter for M. sinaica and M. nitens respectively and the total tannins higher during the autumn (2.1 %) in M. sinaica and (2.9 %) at summer in M. nitens . The most abundant amino acid was proline and the lowest was methionine, the major fatty acid was palmitic acid and the hydrocarbons and sterols

-sitosterol is the highest amount of


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Botany 214 286

WED : 24-03-2010 HALL[POSTER] POSTER - SEC05 ( 11 ) BOT - 9

EG

ASSOC.PROF. EL-KHOLY MOHAMED


TAXONOMIC STUDIES USING POLLEN GRAIN CHARACTERS AND ELCTROPHORETIC TECHNIQUES OF SOME TAXA OF GENUS CHENOPODIUM

(CHENOPODIACEAE) El-Kholy, M. A , Kasem, W. T , Farghal, I. , Gaafar. A. S

ABSTRACT Taxonomical studies using Palynological and electrophoretic characters on fifteen taxa belonging to 9 species of the genus Chenopodium namely C. album, C. ambrosioides, C. amranticolor, C. bonus-henricus, C.ficifolium, C. glaucum, C. murale, C. quinoa, C. strictum have been studied. Pollen grain characters were carried out using light microscope (LM) and Scanning Electron Microscopy (SEM), also, electrophoretic pattern of seed protein profiles and esterase isozymes have been compared using sodium dodecyl sulfate polyacrylamide gel electrophoresis techniques. The data of pollen grain morphology and electrophoretic characters were analyzed by STATISCA program package using the UPGMA clustering method illustrated two distinct taxonomic levels.


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Botany 215 286

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PROF. ENAYAT DESOUKY


BIODEGRADATION OF FORMULATED GLYPHOSATE AS NITROGEN AND PHOSPHORUS SOURCES BY ASPERGILLUS USTUS AND PENICILLIUM CITRINUM E.M.El-Desouky, , M.B.Mahmoud , H.M.Sobhy , S.M.Belal Botany Department, Faculty of Science, Al-Azhar University Plant Protection Department, Faculty of Agriculture, Al-Azhar University, (Cairo). Protection Department, Faculty of Agriculture, Al-Azhar University, (Cairo) Botany Department, Faculty of Science, Al-Azhar University

ABSTRACT Biodegradation of the glyphosate herbicide by the fungi Aspergillus ustus and Penicillium citrinum was determined in a complete and in phosphorus- or nitrogen-free Dox’s media. The fungi were previously isolated from soil and treated with herbicide at 500 µg/g soil. The results indicated that glyphoste concentration from 50 µg/ml up to 200 µg/ml in a complete Czapek’sDox medium enhanced the growth of the two isolated fungi. However, the growth of both fungal strains was reduced by adding 250-300 µg/ml glyphosate to the production media. Both fungal strains were grown well on phosphorus- or nitrogen-free medium amended with different concentrations of glyphosate herbicide compared to the herbicide-free medium. However the fungal strains were able to grow moderately on phosphorus-free medium than on nitrogen-free medium. This indicated that A. ustus and P.citrinum could utilize glyphosate as sources of phosphorus or nitrogen. Additionally, total proteins and phosphorus determination in mycelial biomass of both strains confirmed thiscriteria. Increasing the concentration of glyphosate in both phosphorus- and nitrogen-free media was accomplished with increasing total proteins in mycelial biomass of the two strains. However, the proteins content in case of A. ustus was more than that in case of P.citrinum. Also, the increase of the herbicide concentration in phosphorusfree medium resulted in an increasment of the phosphorus content in mycelial biomass of both fungi. However the phosphorus content in case of A. ustus was more than that in case of P. citrinum. Alkaline phosphatase activity was increased in case of both strains the two isolates by increasing the concentration of glyphosate up to 200 µg/ml. The enzyme activity was higher in an A.ustus than P. citrinum. The glyophosate residues in both complete or uncompleted Czapek’s-Dox broth media were determined. It was found that the herbicide consumption was higher in nitrogen-free medium than that in phosphorus-free one. Also the consumption was higher in the case of A. ustus than P. citrinum. The results showed that the two strains had higher potential to biodegrade glyphosate in phosphorus-free medium, but less degradation was found in nitrogen-free medium.


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Botany 216 286

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PROF. ENAYAT DESOUKY

01:00

: 01:25

[email protected]

SUGARCANE BAGASSE WASTE AS SUBSTRATE FOR -AMYLASE PRODUCTION BY BACILLUS SUBTILLIUS JI10 UNDER SOLID STATE FERMENTATION CONDITIONS Enayat M. Desouky1 , Samir S. El-Louboudy , Reda A. Bayoumy , Heba H. Abd El-Halem Botany and Microbiology Dept. Faculty of Science (Girls), Al-Azhar University Botany and Microbiology Dept. Faculty of Science (Boys), Al-Azhar University Botany and Microbiology Dept. Faculty of Science (Boys), Al-Azhar University Fermentation biotechnology and applied microbiology, Al-Azhar University

ABSTRACT Bacillus subtillius ji10 (27B2) was selected as the most potent amylolytic bacteria which allowed to grow on enviro-agroindustrial waste (sugarcane bagasse) under solid state fermentation (SSF) conditions. Parameters which controlling on

-amylase production were studies, where

the best substrate concentration was at 2.5g/flask, pH: 8, for 48h incubation period, at 35 C, lactose was the best carbon source, ammonium chloride was the best nitrogen source, valine was found to gave higher enzyme productivity on solid bagasse waste among all other tested amino acids in this study, Ascorbic acid amended at concentration (50ppm) was the best inducer for

-amylase production, ferric chloride at (50ppm) induces amylase production. The

optimum bottle capacity for amylase production by B.subtillius ji10 was found to be 1000 ml.

-

amylase was purified using sephadex G-200 gel filtration column chromatography technique. Amino acid analysis indicate that proline represented the highest value i.e. 1390.83

g/mL. The

molecular weight of enzyme was 97.400 kDa where SDS-PAGE of enzyme contains three bands with different molecular weight. Properties of purified

-amylase was studied where the

maximum activity of amylase enzyme was obtained at 40 C, thermostability of purified enzyme was at (40-45) C, pH:9, optimum pH stability was at 10 when incubated for 2h with substrate concentration of (0.1-0.2%).


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Botany 217 286

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BOT - 14

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ASSOC.PROF. ABD EL-MONIUM SHARAF


GROWTH, YIELD AND SOME PHYSIOLOGICAL ASPECTS OF SOYBEAN PLANTS IN RESPONSE TO FOLIAR TREATMENT WITH BENZYLADENINE AND PHOSPHON-D Ibrahim I. Farghal , Abd El-Monem M. Sharaf , Mohamed A. A.

ABSTRACT The present study was carried out to investigate the effects of different foliar treatments with either benzyladenine (BA) or phosphon – D on growth, yield and certain metabolic responses of soybean plants. Most of the growth parameters including length's of shoots and roots, fresh and dry weights of shoots and roots were, generally, increased in response to treatment with BA. The most effective concentration was 100 ppm. Plants treated with 200 ppm or 400 ppm of phosphon – D resulted in, mostly, significant increase in plant biomass ( fresh and dry weight of shoots and roots). However, application of high concentration of phosphon-D (800 ppm) tended to decrease the fresh and dry weights of both shoots and roots of the treated plants. The lower concentration of BA (50 ppm) was the more effective in increasing the number of pods/plant, number of seeds per plant and the weight of 100 seeds. On the other side, only ,weight of 100 seeds was increased due to the treatment with the medium dose of phosphon – D, while the number of pods/ plant as well as the number of seeds/plant were tended to decreased in response to other applied concentrations of phosphon – D. Application of BA and/or phosphon-D , at all concentrations , resulted in, generally, significant increases in the contents of chlorophyll a, b and total chlorophyll content (a + b) of soybean plants. Treatment with 100 ppm BA, mostly increased mono- & disugars of yielded seeds and most of analysed parts, while polysugars tended to decrease. The same trend was observed with 200 ppm BA. Contents of di & polysaccharides significantly increased in the yielded seeds in response to the medinm and higher doses of phosphon-D (400 & 800 ppm). While the lower dose (200 ppm) insignificantly affect the contents of di & polysacharides in all other analyzed parts


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Zoology 218 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 6 )

ZOOL - 1

EG

DR. AMAL EL-REFAIY

02:15

:

02:30

[email protected]

HISTOLOGICAL STUDY ON THE EFFECTS OF FOOD ADDITIVES (SODIUM SACCHARIN) ON THE LIVER AND KIDNEY OF ALBINO MICE Amal I. El-Refaiy , Osama A. Sharaf El Dean , Rabea A. Mouse Tanta, Egypt. Egypt Egypt

ABSTRACT The present study is an investigation of histological effect of sodium saccharin on liver and kidney of male albino mice. The animals were divided into five groups (one control and four treated groups), the treated groups daily received sodium saccharin at doses 0.2%, 1.0%, 1.5% and 0.5% respectively. Each group was divided into two subgroups according to duration of administration, subgroup (a) for 5 days and subgroup (b) for 21 days. Histological changes of the liver were recorded as cytoplasm degeneration,congestion, dilation of central vein and necrosis of some areas. Also, the kidney showed high proliferation of glomerular tuft, swollen of renal tubules and rupture of some walls of bowman`s capsule. These changes were increased with high doses and long-time administration.


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Zoology 219 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC13 ( 7 )

ZOOL - 2

EG

DR. AMAL EL-REFAIY

02:30

:

02:45

[email protected]

GENOTOXIC EFFECTS OF FOOD ADDITIVES (SODIUM SACCHARIN) ON ALBINO MICE Amal I. El-Refaiy , Osama A. Sharaf El Dean , Rabea A. Mouse Tanta, Egypt. Egypt Egypt

ABSTRACT The purpose of this investigation was to evaluate the genotoxic effect of sodium saccharin (common food sweeteners) on the concentration of liver DNA and total protein of liver and serum by using Electrophoretic analysis. The animals were divided into five groups (one control and four treated groups), the treated groups daily received sodium saccharin at doses 0.2%, 1.0%, 1.5% and 0.5% respectively. Each group was divided into two subgroups according to duration of administration, subgroup (a) for 5 days and subgroup (b) for 21 days. The DNA concentrations were statistically increased in groups that taken 1.5% and 0.5% for 21 days. No damage of genomic DNA was recorded. The total protein of liver and serum was decreased and the electrophoretic pattern of protein showed decreasing of albumin and increasing of globulin concentrations.


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Zoology 220 286

WED : 24-03-2010

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ZOOL - 3

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ASSOC.PROF. ADHAM SADIQ

01:00

:

01:25

[email protected]

EVALUATION OF IMMUNE RESPONSE IN CHILDREN INFECTED WITH ENTAMOEBA HISTOLYTICA AFTER TREATING WITH METRONIDAZOLE Sadiq, A.G. Department of Zoology , Faculty of Science , Al-Azhar University,Cairo , Egypt

ABSTRACT This study was designed to evaluate the immune response in children infected by E. histolytica after treated by metronidazole. Immunological evaluation was performed by measurement of secreted cytokines (interleukin, IL-10 - tumor necrosis factor-

in blood of children, on the

other hand E. histolytica cyst output in children stool was measured , and also measurement the NO level in peripheral blood of children . The present investigation is directed to study the therapeutic effect of different doses from metronidazole treatment for controlling of E. histolytica infection in children. The children infected with E. histolytica divided into three group according to the dose of metronidazole (Flagyl syrup). The 1st, second and third group were treated with a 30, 25 and 15 mg /kg per day for 7 days in 3 doses respectively. The results of the present study revealed a significant reduction in cyst count in stool of children were treated by metronidazole at dose 30mg /kg in comparison with control un treated . The data also revealed IL-10 and TNF-alpha were significantly increased as an immunological response for children treatment with metronidazole at dose 30 mg/kg body weight in comparison with children of dose 15 mg and untreated control group. Also the NO level revealed the significant decrease in children at dose 30 mg / kg in comparison with 25 and 15 mg/kg group.


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Zoology 221 286

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ASSOC.PROF. ADHAM SADIQ

01:00

:

01:25

[email protected]

IMMUNE INDUCTION BY A NATURAL PRODUCT AND PIPERAZINE CITRATE DRUG IN RATS INFECTED WITH ASCARIS LUMBERICOIDES Sadiq, A.G. Department of Zoology , Faculty of Science , Al-Azhar University,Cairo , Egypt

ABSTRACT Ascaris lumbricoides remains the most common intestinal nematode in the world. The cytokines are considered the arm of the adaptive immune system is mediated by T helper type 1 ,2 cells (Th1and Th2) and related cytokines, including interferon (IFN)-

and tumor necrosis

factor (TNF)- , and has been reported to play a pivotal role in the control of many parasites . This study investigates the antihelmintic effect of natural product (Allicin garlic) extracts and also synthetic drugs (Piperazine Citrate ). Our targeted to study the effect of natural and synthetic drugs on immune induction of infected rats by Ascaris lumbercodes. Ninety male rats Rattus Rattus were used. The rats were divided into 7 groups. The 1st group was control clean , and the second group was infected control . The groups ( 3, 4, 5,and 6 ) were treated by Allicin garlic extracts with i.m 8 times twice weakly at 0.1, 0.2 , 0.3 and 0.4 mg/kg respectively ) . The Seventh group was received the Piperazine Citrate drug at dose 10 mg/kg body weight 8 times twice weekly. All groups were scarified after 30 days and investigated with the immunoresponse (cytokine) IL-10 and TNF – alpha, paralleled with measurements the ALT, AST, ALP, GGT and Malondialdehyde as an immune factor . The results of the current study revealed that the levels of IL-10 and TNF- alpha were increased significantly in groups treated with natural product (Allicin garlic) . also our data reveled that the MDA level was decreased significantly in groups treated with natural product (Allicin garlic) . On the other hand liver function ALT , AST , ALP and GGT were reveled the significant increased in groups treated by natural product (Allicin garlic as well as Piperazine Citrate drug .


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Zoology 222 286

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01:00

ZOOL - 5

EG

ASSOC.PROF. MARIAM SHARAF

:

01:25

[email protected]

EFFECTS OF DIETARY OXYTETRACYCLINE SUPPLEMENTATION ON HISTOPATHOLOGY IN LYMPHOID AND NON LYMPHOID ORGANS OF CYPRINUS CARPIO Prof.Dr.Hekmat M. Tantawy , Dr. Mariam M. Sharaf , Prof.Dr.Ahmad F. Badran , Hend M. Tag Prof.Dr.of physiology, Dept. of Zoology, Faculty of Science, Suez Canal University Assist.Prof.of fish biology, Dept. of Zoology, Faculty of Science, Suez Canal University Prof.Dr.of fish disease, Faculty of Veterinary, Suez Canal University, Ismailia-Egypt Assist.lecturer, Dept. of Zoology, Faculty of Science, Suez Canal University

ABSTRACT A study

was

conducted to investigate

the effect

of long-term oxytetracycline

(OTC)

supplementation on histopathology of lymphoid and non lymphoid organs in Cyprinus carpio under lab conditions. Common carp were fed 2 dietary treatments for 12 weeks. The control treatment consisted of a standard commercial diet, and the OTC treatment consisted of the control diet supplemented with 100 mg/kg feed. Morphology of the spleen, pronephrous, trunk kidney, liver and gills was examined with light microscopy. Histopathological studies revealed lesions in spleen, pronephrous, kidney, liver and gills. Lesions in the spleen and haematopoietic tissue were prominent in fish fed pellets medicated with sub-therapeutic dose of OTC. Spleen revealed congestion, lymphatic infiltration and depletion of haematopoietic tissue.

In

pronephrous reduction in haematopiotic and lymphatic elements besides hydropic degeneration in interrenal tissue. Necrotic lesions accompanied by dilatation of sinusoids, fibrin deposition occurred in the liver. The kidney also had necrotic lesions in renal tubules, hemorrhage, dilatation of glomerular capillaries and depletion of renal space. Hyperplasia of chloride cells severe necrosis in epithelia cells of secondary lamellae, and congestion at the base of the secondary lamellae were in gill of fish treated with OTC. It is evident from the study that dietary oxytetracycline supplementation cause pathological changes in fish lymphoid and non lymphoid organs.


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Zoology 223 286

WED : 24-03-2010

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ZOOL - 6

EG

DR. TAREK EL-SHEIKH

01:00

:

01:25

[email protected]

MOSQUITO SPECIES DIVERSITY AND ABUNDANCE IN RELATION TO RICELAND AGROECOSYSTEM AND FILARIAL INFECTION IN KAFR EL-SHEIKH GOVERNORATE, EGYPT. TAREK M.Y. EL-SHEIKH , KOTB M. HAMMAD , WALAA A. MOSELHI Department of Zoology, Faculty of Science(boys), Al-Azhar University, Nasr City, Cairo, Egypt. Department of Zoology, Faculty of Science(boys), Al-Azhar University, Nasr City, Cairo, Egypt. Department of Zoology, Faculty of Science(girl), Al-Azhar University, Nasr City, Cairo, Egypt.

ABSTRACT The present work studied the mosquitoes abundance, identification, distribution and densities in three villages (rural area) and one city (urban area) in Kafr El-Sheikh Governorate namely; Kebreet, Minyat Al-Ashraaf, El Salmia and Fowa city, respectively during the rice cultivation season in relation to filaria from June to Oct. 2009. A total of 11381 mosquitoes larvae belonging to four genera and 8 species were collected. Of which 3525 (31.0%) in Minyat AlAshraaf followed by 3339 (29.3%) in Kebreet, 3331 (29.3%) in El Salmia villages compared with 1186 (10.4%) in Fowa city. The five most common species collected during this study were culex pipiens (38.3%), Cx. antennatus (28.2%), Cx. univittatus (15.8%), Anopheles pharoensis (10.4%), and An. coustani (3.2%). The mosquito species diversity (H) and evenness (EH) in the (rice cultivated areas) Minyat Al-Ashraf, Kebreet and El-Salmia villages (H = 1.286, EH = 0.829; H = 1.227, EH = 0.742; H = 1.110, EH = 0.882; respectively) were much higher than in the Fowa city (non rice cultivated area) (H = 0.718, EH = 0.608). On the other hand, the highest diversity and density of adult mosquitoes species obtained from Minyat Al-Ashraaf were 5 species and (32.8%), followed by Kebreet 5 species and (30.6%) , El-Salmia 4 species and (26.9%), respectively compared with 3 species and (9.8%) in Fowa city. C. pipens adults were the predominant species, in all filarial indicator areas ( 68.1, 53.4, 45.8 and 20.8 mosquitoes/room) in Minyat Al-Ashraaf, Kebreet, El-Salmia villages and Fowa city, respectively. C. pipens was the only species to carry infective larvae as well as other stages, while C. antennatus carried immature stages only (not infective). Filarial larvae in C. pipens and C. antennatus were found only in Minyat Al-Ashraaf and Kebreet villages. It is inferred from the data that different levels of habitat with regard to rice cultivation have different effects on mosquito diversity and abundance. Also, our study revealed that filarial vectors C. pipens and C. antennatus had a wide distribution and high relative density especially in irrigated rice regions and hence its role in disease transmission in Kafr El-Sheikh region needs further investigation .


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Zoology 224 286

WED : 24-03-2010

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ZOOL - 7

EG

ASSOC.PROF. ZEINAB HANAFY


GINGER EXTRACT (ZINGIBER OFFICINALE) HAS ANTI-CANCER AND ANTIMUTAGENIC EFFECTS ON MALE MICE Zeinab E. Hanafy Department of Zoology, Faculty of Science (Girls), Al-Azhar University

ABSTRACT Ginger (Zingiber officinale Roscoe, Zingiberaceae) is a commonly used medicinalherb throughout the world. Ginger (Zingiber officinale Rosc) is a natural dietary component with antioxidant and anticarcinogenic properties. Although some studies have demonstrated its antitumour active ities on cancer cells in vitro and in vivo. In the present study, we investigated the influence of Ginger extract on the mice inoculated with Ehrlich ascites. Cytogenetical studies and micronucleus test in somatic cells and DAN fragmentation assay in liver cells was determined in the presence or absence of ginger. The study was performed on four groups of male mice, i.e. control group, Ginger group, animal received oral daily ginger only (100 mg /Kg body wt.).Third group, mice were inoculated intraperitoneally (i.p.) with 2x 106 Ehrlich ascites cells. Fourth group, animal received oral daily ginger (100 mg /Kg body wt.) on day tow after inoculation the animals Ehrlich ascites cells. The result reveled that the chromosome aberration assay in bone marrow cells and micronuclei cells pointed out a significant difference between the mice inoculated with Ehrlich ascites and mice received ginger after inoculated with Ehrlich ascites. There was also a significant increase DNA fragmentation in mice inoculated with Ehrlich ascites. When ginger was used after inoculated with Ehrlich ascites cells the percentage of DNA fragmentation was significant decrease. The ginger extract may have a chemotherapeutic effect in the treatment of cancer. The use of dietary agents such as ginger may have potential in the treatment and prevention of cancer.


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Zoology 225 286

WED : 24-03-2010

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ASSOC.PROF. NEHAL MOUSTAFA


EFFECT OF CHOLESTEROL - METHIONINE ON THE TESTIS OF RATS Nehal ali moustafa Zoology Department, Faculty Of Science, Al-Azhar University (girls) Cairo, Egypt

ABSTRACT Methionine is essential for maintaining proper growth and development in mammals. Also, cholesterol enriched diets significantly increase cholesterol level in body tissues. The present study investigated effects Of dietary methionine and cholesterol diet on histological and some histochemical changes in rat testes. Sixty growing rats(5 weeks old) were divided into six groups.: group( 1)control; groups( 2-6)rats were fed normal diet supplemented with cholesterol (2%); 0.5% methionine; 2% methionine;2% cholesterol and 0.5% methionine,and 2% cholesterol and 2% methionine respectively. The rats were scarified after four months to isolate the testes and epididymis. high cholesterol diet showed disturbance in gametogenesis and epididymis structure; total protein content; carbohydrates and collagen fibers. low doses of methionine improve spermatogenesis and other histochemical factors. But the high doses of methionine in diet causes toxic changes in the testes and epididymis.


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Zoology 226 286

WED : 24-03-2010

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ASSOC.PROF. MARIAM SHARAF

01:00

:

01:25

[email protected]

HISTOLOGICAL EXAMINATION OF GONADAL DEVELOPMANT OF THE EGYPTIAN SOLE SOLEA AEGYPTIACA (CHABANAUD, 1927) COLLECTED FROM PORT SAID, MEDITERRANEAN SEA, EGYPT Mohmoud E. Mohallal , Mariam M. Sharaf , Ashraf I. Ahmed , Hebatullah A. Laban Assoc lecturer-Zoology Department -Suez Canal University Porf Dr of histology and histochemistry -Zoology Department - Suez Canal University Assoc Porf of fish biology -Zoology Department -Suez Canal University Assoc Porf of fish biology- Marine Science Departmen- Suez Canal University

ABSTRACT Histological examination of Solea aegyptiaca gonads were studied Monthly from October 2004 to September 2005. The maturity stages of females were classified into 5 stages: immature, maturing, spawning, post- spawning and resting – recovering . The process of oogensis was divided into 11 stages. The morphological maturation of males was not detected due to the small size of the testes and there were no clear external morphological changes appeared during this study on its shape. Spermatogenesis was classified into 4 stages. Depending on the germ cell types and their relative abundance, maturity stages of males were classified into four stages as the following: pre- spawning, spawning, post- spawning and resting. Four ovotestis specimens were detected, they consist of two lobes, one of them is a normal immature ovary, while the other is abnormal testis.


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Microbiology and Genetic Engineering 227 286

TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 1 )

09:00 : 09:15

MICR - 13

EG

ASSOC.PROF. ATEF IBRAHIM

[email protected]

MOLECULAR CLONING, SEQUENCE ANALYSIS AND EXPRESSION OF SPORULATION – ENCODING GENE (SPO A) FROM BACILLUS SUBTILIS SADATA-

73 ATEF MOHAMED IBRAHIM

ABSTRACT The bacterium, Bacillus subtilis subsp. sadata strain 73 was isolated from sadat city farmers soil and characterized according to Bergy’s manual of determinative bacteriology, and 16s rDNA gene was also sequenced. A genomic library was constructed in lambda ZAP XR vector. 16s rDNA gene was cloned, sequenced and submitted in the GenBank under accession number EU047759. Bacillus subtilis sadata 73 is a Gram positive and catalase and can hydrolyse carboxymethyl

cellulose

(CMC),

locst

bean

gum

(LBG),

starch,

and

other

forms

of

polysaccharides. I cloned also one of the most important gene, sporulation encoding gene from Bacillus subtilis sadata 73 in two steps, A clone has about 1Kb fragment was chosen from the genomic library of B.subtilis sadata-73. The sequence of this fragment contain truncated an open reading frame (ORF) of a sporulation responsible gene of Bacillus subtilis.Using PCR technique I got the complete ORF of spoA gene. The sequence has 1374 bp, encoding 458 amino acids submitted in the Genbank under accession number EU056818. The deduced molecular mass is about 50206.48 Da and isoelectric point (PI 5.51). The sequence of Spo A of Bacillus subtilis sadata 73 has 99% similarity with Bacillus subtilis subsp. Subtilis strain 168 murD gene (Z99111), and 86% with Bacillus amyloliquefaciens FZB42 gene murD (5461796).


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TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 2 )

MICR - 6

IQ

DR. AYMAN FATHE

09:15

:

09:30

[email protected]

ATRIAL STUDY ON THE OCCURRENCE OF AVIAN INFLUENZA VIRUS TYPE A INFECTION IN CHICKENS WITH HIGH-MORTALITY OUT BREAKS Ayman M.J. Fathe , Russen Ali H. Salh

ABSTRACT This study was conducted to determine the prevalence of Avian Influenza virus infection in Broiler and layer's flocks suffering from respiratory and digestive infections reduction egg production as well as mortality rate more than 20% in Ninava proviance flocks during the period from 1th June to 1th October 2008 using rapid test kit for detection of Avian Influenza antigen. The results of this test were negative for all examined samples of both broiler and layers, Indirect. ELISA test was also used for detection of antibodies against Avian Influenza virus type A. The results were positive at percentage of 86% in broiler chicken flocks but was negative for all layers samples.


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TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 3 )

09:30

MICR - 5

JO

PROF. HADEEL AL- HADITHI

:

09:45

[email protected]

INCIDENCE OF SHEWANELLA PUTREFACIENS IN CLINICAL SPECIMENS AND ENVIRONMENTAL SAMPLES. BIOFILM FORMATION AND ERADICATION Prof. Hadeel, T. AL-Hadithi , Saad A. Attia Dep. of Biology/ College of Science/University of Basrah / Iraq. Faculty of Medicin/ University of Thi-Qar/Iraq

ABSTRACT S. putrefaciens is a facultatively anaerobic, nonmotile, gram-negative, nonfermentative bacterium its natural habitat in several environments serve as potential reservoirs for human infection.The aim of the study is to determine incidence of Shewanella putrefaciens in clinical specimens and environmental samples, to examine antibiotic susceptibility isolated S. putrefaciens, to study capability of those isolates for biofilm formation and the use of antimicrobial agents to eradicate biofilm . A total of 320 samples were collected from clinical (n=173)

and

environment(n=1147)

sources;

Cultured

on

McConkey's

and

blood

agar.

Biochemical tests were performed to identify Salmon pink, mucoid colonies and confirmed using API System. Isolates were tested for their ability for biofilm formation and for susceptibility against 8 antibiotics. Eleven isolates of S. putrefaciens were detected: Five from clinical samples( Four from ear infection and one from wounds) and six from environmental sources( Two from hospital beds, two from hospital floor, one from each water and sewage). Ciprofloxacin was the only antibiotic all isolates were sensitive to. Eradication of formed biofilm was performed using different conc. Of Ciprofloxacin (after determining MIC), Saptan and Povidone – Iodine


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 4 )

MICR - 7

SY

PROF. ISAAM KASSEM

09:45

:

10:00

[email protected]

UTILIZATION OF FRESH WATER SNALES AS ECOLOGICAL INDICATORS Dr.Issam Kassem Dept. of Biological Sci. Faculty of Sci, Damascus Univ.

ABSTRACT This study was conducted during 1999 at ten hydro stations in Damascus, with the aim of idenlifying the species of water snales and the reaction between the snail distribution and ecological factors. Six species of Gastropoda, three of which belonging to Prosobranchia and the remainders belonging to Pulmonata were identified. The concentrations of O2,CO2, NO3- , NH4+ and SO4- - were also determined. The Analysis of principal compounds was imposed upon the resulls which revealed some association between the presence of certain species and the ecological factors. The abundance of Physa acuta species was indicative of organic pollutants while some others, namely Melanopsis Proemorsa, Theodoxus Jordani Phialansis were sings of pollutant free water stations.


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 5 )

MICR - 3

IQ

PROF. BASIMA ABED-ALHA

10:00

:

10:15

[email protected]

PREVALEANCE OF ANTI-HCV ANTIBODIES AMONG THALASSEMIC PATIENTS IN MOSUL CITY Basima A. Abdoulla , Mohamad D. AL-Mamary Professor

ABSTRACT The study included (200) Thalassemic patients, 120(80%) males and 80(40%)females, at age (230) years, the average age (16) years and (100) blood donors, at age (20-50) years, The average age (35) years, as control goroup. using ELISA HCV 3.0 to detect anti-HCV in serum of Thalassemic patients and bood donors, The result shows (17%) positive, (76%) negative, (7%) equivocal in serum of Thalassemic patients but it shows in serum of blood donors (1%)positive, (98%) negative, (1%) equivocal, The result shows significant differncce (P 0.05) between prevaleance of anti-HCV antibodies in Thalassemic patients and blood donors, confenmatory Tests by Recombenant Immunoblot version 3.0 (RIBA) shows (17%) positive, (79%) negative and (3.5%) equivocal in serum of thalassemic patients but show (2%) positive, (98%) negative in serum of blood donors.


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC03 ( 6 )

10:15

MICR - 4

IQ

PROF. BASIMA ABED-ALHA

:

10:30

[email protected]

PREVALENCE OF SYSTEMIC ERYTHEMATOSUS LUPUS AMONG WOMEN IN NINAVAH GOVERNMENT Basima A. Abdoulla , Mahmod Fathel hadad

ABSTRACT The study included (200) patients females, at age (15 - 45) years. The average age (30) years, Suspected affected by autoimmune disease depending in clinical symptoms observed by specialist physicians in Ibn Sina, AL-Batol and AL-Salam hospital in Mosul, The symptoms included (50%) arthritis, (20%) recurrent abortion, (10%) interterm death, Deep rein thrombosis (10%), (5%) renal disorder, (5%) skin disease and (50) females as control group at age (15 - 40) years, the average age (27.5) years. The patients visited Inb Sina, AL-Batol, ALSalam hospital in Mosul, The period from August 2004 at February 2007. We depending in clinical symptoms observed by specialist physians and results of immunological tests show, 15 (7.5%) females had lupus after complete four criteria from eleventh of criteria according American

Rheumatism

Association

for

diagnosis

Lupus.

The

percent

positively

of

immunological in lupus patients show, ANA (100%), ds DNA (100%) ACL (85%), AMA-M2 (0%) comparison with the percent positive immunological tests in control group show (0%). It was conclusion the high significant differences in (P tests between lupus patients and control group.

0.05) between the positively of immunological


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC08 ( 1 )

MICR - 1

IQ

DR. AYMAN FATHE

10:30

:

10:45

[email protected]

ISOLATION AND IDENTIFICATION OF STAPHYLOCOCCUS AUREUS FROM MEAT OF POULTRY SLAUGHTERHOUSES AND THERE WORKERS IN NINEVEH PROVINCE Ayman M. J. fathe

ABSTRACT This study includes isolation and identification of Staphylococcus aureus from animals and human during the period from november 2008 till march 2009 .384 samples were collected from poultry slaughterhouses from which meat samples were taken from breast and thigh besides, swaps were taken from the skin of the carcasses of the same birds' parts. 72 human samples were collected from the same slaughterhouses workers.The diagnosed strains by means of biochemical and differential tests were found to be isolations no. for 138 (35.93%) positive for Staph. aureus in samples from birds and workers.29.5% for Staph. aureus isolated from chicken meat and 63.8% isolated from worker noses .The selective cultural media used was prepared in the lab, included Baird – Parker agar and Vogel and Johnson Agar. The definitive diagnostic kit of API Staph used for the confirmation of Staph. aureus and determination of biotype. It was found there was similarity of the biotype of some strains from both sources of workers and slaughtered chickens. The enterotoxin was extracted from the staph. Colonies and identified the types of toxins (A, B, C, D) by ELISA. and identified the colonies that produced more than one type of enterotoxins which were 32 samples (34.7%).MRSA(Methicillin Resistant Staphylococcus Aureus) diagnosed by using Slide MRSA Detection kit. 23.53 %strains isolated from poultry meat and 55.55% isolated from workers were Methicillin resisted. Antibiotic sensitive test done by using Mueller-Hinton agar and all the isolations were found to be sensitive to antibiotics ( cefotrixon ,vancomycin and cefalothin ) while it was resisted to some other antibiotics (oxytetracycline, gentamycin, penicillin and chloromphenicol ).


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC08 ( 2 )

MICR - 12

EG

DR. RAGAA HAMOUDA

10:45

:

11:00

[email protected]

ANTICANCER ACTIVITY FROM EXTRACTION OF EGYPTIAN MARINE ALGA, ULVA RIGIDA Ragaa A. Hamouda , Atef M. Ibrahim , Tarek A. Salem , Ibrahim H.Elsayd , Usama M.Abdulraouf Lecturer of Microbiology Assist. Prof. of Microbiology Assist. Prof. of Biochemistry Assist. Prof. of Biochemistry Prof. of Microbiology Prof.Dr. of Genetics

ABSTRACT The chemical and biological diversity of the marine environment is immeasurable and therefore is an extraordinary resource for the discovery of new anticancer drug. Marine algae are rich sources of new, biologically active compounds. Seaweeds have traditionally been used as food, but have also been used as folk medicine, particularly by coastal peoples. Recently, much attention has been paid to the antitumor activity of seaweed. Thus, we have screened the extracts of some Egyptian marine algae for their anticancer activity against Ehrlich Ascites Carcinoma (EAC) cell line.This paper highlight the anticancer activity of petroleum ether, chloroform and methanol extracts of marine algae Ulva rigida, Enteromorpha clathrata, Jania adherans, Corallina elongate in-vitro against Ehrlich Ascites Carcinoma (EAC) cell line. The results indicate that chloroform and methanol extracts of Ulva rigida has more activity than other extracts, of different algae in vitro. So methanol and chloroform extracts of Ulva rigida were tested in vivo and the results denote that maximal reductions of tumor volume (84.2 ± 7.1 and 77.8 ± 13.4) were observed when solid tumor-bearing mice were treated with methanol extracts 60 and 80 µg/ml, respectively. The maximal inhibitory action on the level of lipid peroxidation (64.8 ± 4.5 and 69.6 ± 13.3 at methanol 80,100 µg/ml respectively). Treatment with Ulva rigida extracts leads to remarkable increases in of SOD and catalase activities that associated with reduction in tumor volume revealing their antitumor activity, (65.0 ± 5.7 and 69.0 ± 4.7 respectively) and catalase levels (8.1 ± 0.3 and 8.3 ± 0.6 respectively) at the same concentrations.


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC08 ( 3 )

MICR - 17

LY

DR. SANIA ABDELAAL

11:00

:

11:15

[email protected]

HOSPITAL- AND COMMUNITY- ACQUIRED METHICILLIN-RESISTANT STAPHYLOCOCCUS AUREUS IN BENI-SUEF CITY,EGYPT. Saafan, E. A. , Ahmed, H. S. , Amin, A. M. , El.Gendy, O. A. Department of Microbiology and Immunology, Faculty of Pharmacy, Omar- Al-Mukhtar University, Libya Assiut University Cairo University Beni-Suef University, Egypt

ABSTRACT All strains proved to be Staphylococcus aureus in this study were examined for methicillin resistance by disk diffusion methods. The results revealed the presence of 109 methicillinresistant St. aureus (MRSA) isolates, 49 intermediate sensitive isolates and 64 sensitive isolates. St. aureus isolates were subcultured on oxacillin resistance screening agar base (ORSAB) medium, and the results revealed that 98 resistant isolate can grow on ORSAB medium and 124 sensitive isolates cannot grow. Polymerase chain reaction (PCR) is considered as the gold standard method to detect MRSA isolates by detecting the presence of mecA gene. It was observed that there are 91 isolates carrying mecA gene and 18 isolate not carry the gene. The overall numbers of MRSA isolates were 91, distributed as 13 MRSA isolates from food samples and 78 MRSA isolates from clinical samples. Clinical MRSA strains were isolated from a total of 324 clinical samples, while the other 246 samples revealed 83 methicillin sensitive St.aureus strains, 86 coagulase negative staphylococci isolates and 87 sterile samples not contain staphylococci. The highest percentage of MRSA isolates were recovered from pus samples (33.33%) and the lowest from urine (12.96%). The highest level of MRSA incidence occurs more frequently at the age between 20 and 40 years and between 40 and 60 years. Regardering gender, the incidence level is nearly equal in both genders. Thirty seven isolates of St. aureus and 23 isolates of coagulase negative Staphylococci are isolated from 110 milk and milk products, only 5 isolates of them are proved to be MRSA. Twenty four isolates of St. aureus and 27 isolates of coagulase negative staphylococci are isolated from 100 fast food samples, only 8 isolates of them are proved to be MRSA. According to the biochemical tests used for identification of St. aureus, 8 atypical MRSA (5 are coagulase negative and 3 are DNase negative) were obtained, all are from the clinical samples and 83 typical MRSA from food and clinical samples. Antibiotic susceptibility test was done using disk diffusion method. Isolates that are resistant to more than 3 antibiotics are considered as multi-resistant isolate there are 8 multi-resistant isolates, all are clinical samples. The vancomycin resistance was detected by disk diffusion method and agar diffusion method, all isolates were vancomycin-sensitive isolates and there is no evidence for vancomycin-resistant or intermediate-sensitive isolates.


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC08 ( 4 )

MICR - 19

LY

DR. FARAG SAIEB

11:15

:

11:30

[email protected]

CONDITIONING OF CRUDE OIL DEGRADATION BY BACTERIA ISOLATED FROM SARIR REFINERY WASTEWATER - LIBYA. Farag M. Saieb , Abdelhamid H. Elghazawani Dr. Farag M. Saieb, Microbiology Laboratory, Department of Botany, Omar Almukhtar University, El-beida, Libya. P.O. Box: 919 El-beida, Libya, [email protected] Tel:00218-926215879 Inspection and Corrosion Section, Sarir Oil Field, Arabian Gulf Oil Company, Benghazi, Libya

ABSTRACT Forty isolates of hydrocarbons degrading bacteria were isolated from the wastewater system of Sarir Refinery. The growth of bacterial isolates was decreased with increasing of crude oil concentrations. At 50% (v/v) oil concentration, only four isolates showed very good growth. Five different hydrocarbons (kerosene, gasoline, benzene, toluene and xylene) were tested for substrate specificity as a sole carbon source. Some isolates were able to grow on the different substrates tested with varying performances. Results showed that most isolates were able to grow on kerosene, However, only two isolates (B3 and SI1) were able to grow on gasoline. Isolate S6 was able to grow in benzene, toluene and xylene. The obtained results indicated that four bacteria isolates (D2, S3, SI1 and SI2) which has plasmid DNA, were the most efficient bacteria as they were able to grow in different selective media with crude oil up to 50% (v/v) concentration. Four

bacterial

isolates were identified as Cellulosimicrobium cellulans,

Brevibacterium liquefaciens, Brevibacterium mcbrellneri and Enterococcus saccharolyticus respectively.


.. .:: ::. ..



TUE : 23-03-2010

HALL[C]

ORAL - SEC08 ( 5 )

11:30

MICR - 10

EG

DR. MAHMOUD ELAASSER

:

11:45

[email protected]

EVALUATION OF THE BIOLOGICAL ACTIVITY OF NEW COMPOUND ISOLATED FROM ASPERGILLUS CANDIDUS Mahmoud M. Elaasser , Marwa M. Abdel-Aziz The Regional Center for Mycology and Biotechnology, Al-Azhar University The Regional Center for Mycology and Biotechnology, Al-Azhar University

ABSTRACT Purpose: In our ongoing search for bioactive compounds from fungi, the purpose of this study is to evaluate the antimicrobial, antiviral, antioxidative and antitumor activities of certain compound isolated from Aspergillus candidus. Methods: To test antibacterial, anti-yeast and antifungal activity, the filtrate obtained by culturing Aspergillus candidus on malt extract broth for two weeks was screened by using agar well diffusion method. The extract was also evaluated for its antioxidative activity using DPPH radical scavenging capacity assay. The active ingredient was purified to yield white crystalline compound and identified using UV, FTIR, 1HNMR and EI -MS analyses. The cytotoxic and antitumor effects of the compound on Vero and HEp2 cells, resepectively, were assayed using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide [MTT]. MTT was also used to evaluate the antiviral activity against herpes simplex virus type 2. The 50% cytotoxic concentration (CC50) and the 50% inhibitory concentration (EC50) were calculated

by

linear

regression

analysis.

The

active

compound

was

identified

as

dihydroxymethyl pyranone. The compound had high antifungal activity against dermatophytes as well as other opportunistic fungi tested. The compound had antitumor activities against cancerous cells. Neither all dilutions examined showed a significant cytotoxicity to normal cells. Compared to

-tocopherol, the isolated compound exhibited high antioxidative activity for the

radical scavenging activity and superoxide. The compound showed some antiherpetic activity with acceptable therapeutic indexes. Conclusion: The study illustrates the biological activities of a pyranone derivative isolated from Aspergillus candidus, and is therefore, a potential drug and a good candidate further studies and development.


.. .:: ::. ..



TUE

: 23-03-2010

MICR

-2

HALL[C]

ORAL

- SEC08 ( 6 )

IQ

PROF. BASIMA ABED -ALHA

11:45

:

12:00

[email protected]

IDENTIFICATION OF STAPHYLOCOCCUS SCIURI AND BRUCELLA MELITENESIS ISOLATED FROM CASES OF BACTEREMIA AND ENDOCARDITIS AND KIDNEY FAILURE AND MECHAINISM OF RESISTANCE Basima Ahmed Abdulla , Fattma Abodi Ali Mohammed Al-Khazli

ABSTRACT This study involved the isolation and identification of Staphylococcus sciuri and Brucella meltiensis suspected to be infected with Bacteremia, endocarditis and kidney failures cases in Al-Salaam, Al-Khansah, Abn-Atheer, Ibn Sena, AlZahrawi hospitals of Mosul city. The study started from Feb. (2004) till Feb. (2005). A total of (202) blood samples were collected from both sexes. The bacteria were diagnoised using biochemical and physiological tests. The results recovered (16) isolates of Staph. sciuri and (7) isolates of Br. melitensis. According to aims proposed some essentials tests were carried out as a screening tests for the virulence as DNase, lecithenase, lipase, protease, alkaline phosphatase and haemolysin. The results showed the ability of all strains of Staph. sciuri to produce alkaline phosphatase, while only (25%) of them were capable of producing DNase and haemolysin and unability of Br. melitensis to produce any of these enzymes. The pathogenicity of the bacteria also were evaluated by screening their ability of adhesion urinary tracts epithelial cells using immunoflourecence microscopy and by applying statistical analysis, highest adherence rates were recorded for Staph. sciuri isolated from kidney failure in contrast to strains isolated from endocarditis. Also the study showed the capability of Br. melitensis isolated from endocarditis and kidney failure cases to produce a slime as complementary pathogenicity factors. After applying haemagglutination test two isolates able to be aggulutinated with human, sheep, rabbit and horse red blood corpuseles. The study also detected antigen of Br. melitensis using ELISA technique. As concern antibiotics sensitivity test a variable rate between strain were observed, the most effective antibiotics against Staph. sciuri were Cefepime, Ciprofloxacin followed by Ofloxacin, Streptomycin, while for Br. melitensis the most effective antibiotics were Cefepime, Gentamicin, Streptomycin. Although of MIC difference Staph. sciuri showed that high MIC observed toward antibiotics as it reached (512) µg/ml for amoxicillin, ampicillin for some strains of staph. sciuri. On other hand, Br. melitensis showed MIC between (0.5-32) mg/ml towards most antibiotics, also the results showed that the strains posses predominant resistance differences against (6-24) antibiotics for Staph. sciuri and between (11-22) antibiotics against Br. melitensis. As regard the mechanism responsible for antibiotic resistance a Beta Lactamase (BLs) production screening the ability of Staph. sciuri to produce it also by applying iodometric method, the results showed that (62.5%) of Staph. sciuri produce BLs, (60%) of them produce it through few seconds, also (50%) of Staph. sciuri was produced Extend Spectrum Beta lactamase (ESBLs) after using electrophoresis technique using Polyacrylamide gel with sodium dodocyl sulfate (SDS – PAGE) for BLs extracted from the (5) strains produced it and it revealed (1-3) bands with m.wt. between (20-26) KDa. For investigating the genetic factors responsible for antibiotics resistance for Staph. sciuri transformation experiments were carried out with standard strains Escherichia coli JM83 using DNA plasmid purified from (5) strains of Staph. scriui for the location of the antibiotic resistant genes. It was found that this genes are located on plasmid DNA molecules and these results were supported by electrophoresis of DNA purified from plasmid transformed colonies of laboratory strains of E. coli JM83, a single band of plasmid DNA on agarose gel appeared to have between (1-4) bands according to the types of the strains. On the other hand, one strain couldn't give any band which may indicate the occurrence of gene code for antibiotic resistance may be carried by the chromosome too. To support the genetic result the chemical materials and physical factors were used to eliminate the antibiotic resistance of bacteria isolates a chemical was used SDS which appear to have high effectiveness in curing the plasmid DNA, for the most antibiotics have a cure rate between (30-100)% followed by the dye acridine orange between (20-80)% then ethidium bromide between (24-60)% finally temperature was raised to 44 C, the cure rate between (3070)%.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


01:35 : 02:00

MICR - 8

LY

DR. MUSTAFA SAIEH

[email protected]

IMMUNOSTIMULATORY PROPERTIES AND ANTITUMOR ACTIVITIES OF GLUCANS: A SHORT REVIEW Mustafa Saieh Aljabal alghrbi Universitiy, Faculty of Sciences, Biology department

ABSTRACT In the last few decades, the biological activities of glucans have become object of increasing attention in biochemistry and medicine. The

-glucans have a long scientific history. The first

interest in the immunomodulatory properties of polysaccharides raised after 1940’s when Pillemer described a crude yeast cell wall preparation: the Zymosan (1). He reported that this material was able to stimulate nonspecific immunity. It was unknown at that time which component of this preparation activated the immune response. Later on, in the 60’s, Di Luzio conducted additional research discovering that the active immune-activating compound within the components of Zymosan was a -glucan (2). Since then, many studies have been performed on the glucans devoted to clarify their immunomodulating activities and possible effects as immunostimulating antitumor therapeutics (3, 4, 5, 6, 7). The recent advances in understanding host immune responses to infectious diseases and cancer, have renewed the interest also toward the development of immunitherapeutic approaches. Consequently, researches are newly involved in studies to identify compounds that can modulate the biologic response of immune cells, and enhance the hosts ability to resist diseases. Polysaccharides, including the glucans, since a long time have been believed biologically active (8, 9).Certain polymers, such as (1-3), (1 -6)-

-glucans, were recently shown to act as potent immunomodulating agents (8, 10). The

main source of antitumor polysaccharides appears to be related to fungal cell walls which consist either of polysaccharides such as chitin, cellulose, (1-3), (1-6)-

-glucans and (1-3)- -

glucans or polysaccharide-protein complexes (11). This short review will focus on glucans that can act as immunotherapeutics.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


MICR - 9

EG

DR. TAREK ABDELGHANY


BIOLOGICAL AND PHYSICAL EVALUATION OF ASPERGILLUS CHEVALIERI GROWTH AND THEIR TELEOMORPH Abdel ghany T. M. , H.H. El- Sheikh , A.A. Razak Botany & Microbiology Dep. Fac. Science Al-Azhar University , Al-Azhar University Al-Azhar University

ABSTRACT Aspergillus chevalieri and Eurotioum chevalieri were used in this study, the optimum incubation temperature was 30oC and pH was b for both two fungal species. Eurotium chevalieri was more affected by different pH Than Aspergillus chevalieri. Cleistothecia production

by

Eurotium

chevalieri

concentration, The free amino acids,

increased

with

increasing

- amino adipic acid,

glycerol

and

sucrose

-amino butyric acid and

cystathionine were detected in Aspergillus chevalieni only, while methionine was detected in Eurotium chevalieri only. proline, ornithine, lysine and arginine. were detected in higher concentration in Eurotium chevalieri. than Aspergillus chevalieri. Aspergillus chevalieri produced 15 extra - and 6 intra-cellular volatile metabolites, while Eurotium chevalieri produced 9 extra- and 15 intra-cellular volatile metabolites, all those metabolites of both fungal species were different except one metabolite 2,3-dihydroxy- 6- methyl-4- H- pyran 4-one was detected in the two fungal species.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


MICR - 11

EG

DR. AMAL MEKAWEY

01:35

:

02:00

[email protected]

ANTIBACTERIAL AROMATIC METABOLITES FROM A SEVERAL SPECIES OF VERTICILLIUM FUNGUS Amal A. I. Mekawey , Mohamed H. Mourad the regional center for mycology and biotechnology- Al-Azhar University, Cairothe regional center for mycology and biotechnology- Al-Azhar University, Cairo-

ABSTRACT Two new sulfur-containing phenolic compounds, 1,4-di [(3-methylamizobenze),[1-(prop-3-only) aminobenze)] propyl] benzene (1) and 2[1-[1-propyl phenolyl] acetophenolyl] , 1-[1-(1-butyl phenolyl) acetophenolyl] diacetophenone (2), were isolated from the extra metabolites of two species of Verticillium fungus by antibacterial assay against five gram positive and five gram negative bacteria.. Compounds 1–2 showed great ability to use as antibacterial agents. Their structures were elucidated after fractionated by column chromatography and identified by IR, NMR and MS/GS spectroscopic analysis.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


MICR - 14

EG

MS. SIF SASA


PURIFICATION AND SOME PROPERTIES OF THERMOALKALO-STABLE LIPASE(S) FROM THERMOALKALOPHILIC BACILLUS BREVIS-B2 Eglal A. Ghoneimy1 , Reda A. Bayoumi2 , Ali H. Rady3 , Sanaa A. Ahmed , Ola E.A. ElHager5. 1,4 Botany and Microbiology Dept., Faculty of Science (Girls)-Al-Azhar Univ., Cairo, Egypt. Botany and Microbiology Dept., Faculty of Science (Boys)-Al-Azhar Univ., Cairo, Egypt. 3,5 Nuclear Research Center, Atomic Energy Authority, Egypt. 1,4 Botany and Microbiology Dept., Faculty of Science (Girls)-Al-Azhar Univ., Cairo, Egypt. 3,5 Nuclear Research Center, Atomic Energy Authority, Egypt.

ABSTRACT Thermoalkalo-stable lipase(s) isolated from cell free filtrate of thermo-alkalophilic B. brevis B2 was purified 21.8 fold. Maximum enzyme activity was obtained at 80oC. After 1 h incubation at 70oC and 80oC the remaining activities were 95% and 98% respectively, showing the high thermostability of lipase(s) activity. Optimum pH was at 9.5. The remaining activities were 86%, 90%, 80% and 86% after 1 h incubation at pH 9, 9.5, 10 and 10.5 respectively indicating the alkalo-stability of lipase(s) activity. The catalytic activity of the enzyme was found to be stimulated by Ca2+ and inhibited by Hg2+, Zn2+, Cu2+ and Cd2+. Exposure of the enzyme to chlorine caused complete inactivation within few minutes. Addition of some surfactant, oxidizing agents and commercial reagents revealed an increase in the activity of the enzyme.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


MICR - 15

EG

PROF. HESHAM MAHDY

01:35

:

02:00

[email protected]

EXTRACTION AND CHARACTERIZATION OF BIOSURFACTANT PRODUCED BY SOME CANDIDA STRAINS Mohamed N. Hamdan , Mohamed A. Fareid , Hesham M. Mahdy Botany & Microbiology Dept., Faculty of Science, Al-Azhar University Botany & Microbiology Dept., Faculty of Science, Al-Azhar University Botany & Microbiology Dept., Faculty of Science, Al-Azhar University

ABSTRACT The present study dealt with screening, extraction and characterization of biosurfactant produced from some Candida strains. Three Candida strains out of 25 were selected for their promising ability to produce biosurfactant. These strains were Candida famata No. 11, C. albicans No. 13 and C. albicans No. 25. Biosurfactant was extracted by 4 different solvents in acidic, neutral and alkaline conditions. The most convenient solvent for extraction process; ethyl acetate was suitable organic solvent for extraction process. Candida albicans No. 13 was found to be the most potent organism among all Candida strains in production of biosurfactant. Characterization of this biosurfactant spectroscopically via UV, IR, HPLC and GC/Mass confirmed

the

hydroxylamine

presence butoxyamine

of

hexyl

(C4H11NO)

tetrahydrocannabinol-dibenzopyran and

naphthalene

(C22H32O2),

dimethyl-N-octyl

(C20H32).

Biosurfactant showed some applicable aspects such as defoamer, dispersion agent for oil and wetting agent of immiscible surfaces with water.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


01:35 : 02:00

MICR - 16

EG

PROF. HOSSIN SHEIKH

[email protected]

BIOLOGICAL ACTIVITY OF FUNGAL SECONDARY METABOLITES H.H. El- Sheikh , A.A. Razak , Abd El- Ghany T. M. Botany and Microbiology, Faculty of Science, Al-Azhar University Botany and Microbiology, Faculty of Science, Al-Azhar University Botany and Microbiology, Faculty of Science, Al-Azhar University

ABSTRACT Aspergillus chevalieri and Eurotium chevalieri produced antimicrobial and antinsectal metabolites, also the extra cellular secondary metabolites of the two fungal species reduced the Zea mays grains germination, However Aspergillus chevalier secondavy metabolites were more affective. Vegetative and reproductive structures of Aspergillus terreus, Penicillium sp, Alternaria alternata and Candida albicans were affected by secondary metabolites of Aspergillus chevalieri and Eurotium chevalieri. Secondary metabolites of Eurotium chevalieri, pachybasin islandicin and skyrin were detected at all studied incubation periods, while m-hydroxy benzoic acid was dtected at 5 days only. m-Hydroxy benzoic acid was detected in cultwre medium of Aspergillus chevalieri at 0.99, 0.86 and 0.79 water activity while kojic acid was detected at 0.86 water activity only. Fumarprotocetraric acid was detected in culture medium of Eurotium chevaliei at all different water activity. B- nitropropionic acid produced by Aspergillus chevalieri in the presence of NaSe, CuSo4 and AgNo3.unidentified compounds (unknown 2 & 9), orsellinic acid etaconitin and xanthocillin, were produced by Eurotium cheralieri in the presence CuSO4 and AgNO3 respectively. Epoxysuccinic acid was produced by the two fungal species, in the presence succinic acid, while, miriquidic acid, itaconic acid and identified compound (unkinow 1) were produced by the two fungal species. in the presence of aconitic acid. Mycophenolic acid was produced by Aspergillus chevalieri in the presence of ornithine.


.. .:: ::. ..



WED : 24-03-2010

HALL[POSTER]


MICR - 18

EG

DR. TAREK ABDELGHANY


BIOLOGICAL ACTIVITY OF FUNGAL SECONDARY METABOLITES H.H. El- Sheikh , A.A. Razak , Abd El- Ghany T. M. Botany and Microbiology, Faculty of Science, Al-Azhar University Botany and Microbiology, Faculty of Science, Al-Azhar University Botany and Microbiology, Faculty of Science, Al-Azhar University

ABSTRACT Aspergillus chevalieri and Eurotium chevalieri produced antimicrobial and antinsectal metabolites, also the extra cellular secondary metabolites of the two fungal species reduced the Zea mays grains germination, However Aspergillus chevalier secondavy metabolites were more affective. Vegetative and reproductive structures of Aspergillus terreus, Penicillium sp, Alternaria alternata and Candida albicans were affected by secondary metabolites of Aspergillus chevalieri and Eurotium chevalieri. Secondary metabolites of Eurotium chevalieri, pachybasin islandicin and skyrin were detected at all studied incubation periods, while m-hydroxy benzoic acid was dtected at 5 days only. m-Hydroxy benzoic acid was detected in cultwre medium of Aspergillus chevalieri at 0.99, 0.86 and 0.79 water activity while kojic acid was detected at 0.86 water activity only. Fumarprotocetraric acid was detected in culture medium of Eurotium chevaliei at all different water activity. B- nitropropionic acid produced by Aspergillus chevalieri in the presence of NaSe, CuSo4 and AgNo3.unidentified compounds (unknown 2 & 9), orsellinic acid etaconitin and xanthocillin, were produced by Eurotium cheralieri in the presence CuSO4 and AgNO3 respectively. Epoxysuccinic acid was produced by the two fungal species, in the presence succinic acid, while, miriquidic acid, itaconic acid and identified compound (unkinow 1) were produced by the two fungal species. in the presence of aconitic acid. Mycophenolic acid was produced by Aspergillus chevalieri in the presence of ornithine.


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WED : 24-03-2010

HALL[POSTER]


MICR - 20

EG

MS. EMAN ABDEL RAHMAN


OPTIMIZATION OF CERTAIN NUTRITIONAL & CULTURAL CONDITIONS FOR ANTIMICROBIAL AGENT PRODUCTION BY MOST POTENT ACTINOMYCETE ISOLATE. Samir S. EL-Louboudy , Enaiat Mahmoud Desuki , Hussam M. Ahmed Atta , Sanaa Ali Ahmed , Eman Abd-Elrahman Mahmoud Ahmed Prof.Of Microbiology, Faculty of Sci.,Director of Fermentation Biotechnology and applied Prof. of microbiology- Fuculty of science , Girls Branch , Al-Azhar university Asist. Prof.of of Microbial Fermentation biotechnology, Fuculty of science, Lecture of microbiology, Fuculty of science, Al-Azhar university. From Fermentation biotechnology and applied microbiology center

ABSTRACT One hundred and thirty actinomycete isolates were picked up from 12 soil samples collected from different localities in Egypt. All isolates were screened for their potentiality to produce bioactive compounds by using well cut diffusion technique against the following pathogens : Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Klepsiella pneumonia and Candida albicans as indicator strains. Well cut diffusion technique was performed using nutrient agar as aculture medium. The present study design was applied to optimize the fermentation conditions and maximize the antimicrobial agent productivity. The optimized medium was formulated as follows: (g/l): Soluble starch ,10.0; K2HPO4 (anhydrous), 1.0; MgSO4. 7 H2O, 1.0; NaCl, 1.0; (NH4)2 SO4,2.0; CaCO3 2H2O, 2.0; Trace salt solution, 1.0 ml; Agar, 20,adjusted at pH 7 and inoculum sizes were standarized at 4discs for each 50ml medium, this medium gives inhibition zone of 30 mm when incubated a t 30°C for 96 h.


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WED : 24-03-2010

HALL[POSTER]


MICR - 21

EG

MR. EL3ZBA 2008

01:35 :

02:00

[email protected]

PURIFICATION AND SOME PROPERTIES OF THERMOALKALO-STABLE LIPASE(S) FROM THERMOALKALOPHILIC BACILLUS BREVIS-B2 Eglal A. Ghoneimy1 , Reda A. Bayoumi2 , Ali H. Rady3 , Sanaa A. Ahmed4 , Ola E.A. ElHager5

ABSTRACT Thermoalkalo-stable lipase(s) isolated from cell free filtrate of thermo-alkalophilic B. brevis B2 was purified 21.8 fold. Maximum enzyme activity was obtained at 80oC. After 1 h incubation at 70oC and 80oC the remaining activities were 95% and 98% respectively, showing the high thermostability of lipase(s) activity. Optimum pH was at 9.5. The remaining activities were 86%, 90%, 80% and 86% after 1 h incubation at pH 9, 9.5, 10 and 10.5 respectively indicating the alkalo-stability of lipase(s) activity. The catalytic activity of the enzyme was found to be stimulated by Ca2+ and inhibited by Hg2+, Zn2+, Cu2+ and Cd2+. Exposure of the enzyme to chlorine caused complete inactivation within few minutes. Addition of some surfactant, oxidizing agents and commercial reagents revealed an increase in lipolytic activity.


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WED : 24-03-2010

HALL[POSTER]


MICR - 22

EG

DR. MOHAMED MOHAMED ROUSHDY


IN VITRO EFFICACY OF CLOVE [SYZYGIUM AROMATICUM (L.) MERR. & PERR. (MYRTACEAE)] EXTRACT AS ANTIBACTERIAL AND ANTIFUNGAL AGENT Mohamed M. Roushdy , Bakry M. Haroun , Essam H. Abdel-Shakour Faculty of Science, Al-Azhar university, Cairo Faculty of Science, Al-Azhar university, Cairo Faculty of Science, Al-Azhar university, Cairo

ABSTRACT This study was conducted to evaluate the potential of clove, Syzygium aromaticum, extracts to inhibit the growth of some different common bacterial and fungal genera. Different solvent extracts of Syzygium aromaticum were tested for antibacterial and antifungal activities. In this study, B. subtilis, S. aureus, E. coli, P. aeruginosa, C. albicans, A. flavus and A. niger were used as test organisms. The previous extracts showed antimicrobial activity against all tested Gram positive, Gram negative, and fungal organisms at varying degrees. It was also found that Gram positive bacteria and filamentous fungi are highly and more sensitive than their counterparts Gram negative and unicellular fungi. The best extract showed activity was the alcoholic extract (70 % ethanol). Bioautographic detection confirmed presence of homogenous band against bacteria and fungi. The active compound(s) were analyzed using GC-MS and IR spectroscopy and suggest presence of high content of Eugenol. MICs, MBCs, and MFCs of the active compound(s) were determined against bacteria and fungi and ranged from 15.60-500 ppm. To clarify the mode of action of the active compound(s) on filamentous fungi, A. niger photomicroscopy was used to assess the effect on the fungus cell integrity exerted by the S. aromaticum extract.


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WED : 24-03-2010

HALL[POSTER]


MICR - 23

EG

MS. NARGUESS HOSSAM EL DIN MAREI


GENE DELIVERY TO PLANT CELL Narguess Hossameldin Marei , Kareem Dorri Zaki , Rofida Sabry Huseen , Shehap El din Sayed , Laila Ashraf abd el samad Student at Biotechnology faculty of sciences cairo university Student at Biotechnology faculty of sciences cairo university Student at Biotechnology faculty of sciences cairo university Student at Biotechnology faculty of sciences cairo university Student at Biotechnology faculty of sciences cairo university Student at Biotechnology faculty of sciences cairo university

ABSTRACT Gene transfer (GT) or gene delivery is the process of introducing foreign DNA into host cells. Gene transfer can be horizontal, vertical or normal. Most gene transfer work in plants relies on the ability to produce whole plants (regeneration) from either a single cell or a group of cells. There is a number of genetic transformation methods developed for the production of transgenic plants. Generally, the methods can be divided into two categories, viral and nonviral. The methods can be either physical (protoplast fusion, direct transfer of gene and microinjection) or chemical (electroporation, gene gun). This is followed by the transgenic analysis concerns the selection of transgenic cells and the analysis of the delivered gene(s). The current investigation will describe gene delivery techniques and the widely applied methods currently used in Egypt.


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WED : 24-03-2010

HALL[POSTER]


MICR - 24

EG

MR. ESLAM MOHAMED

01:35 :

02:00

[email protected]

DESIGNER BABIES Eslam mohamed mohamed , Nourhan Emad Hassan cairo university, cairo, egypt. cairo university, cairo, egypt.

ABSTRACT This is a review article about designer babies. “Designer Babies” is a journalistic term for what is in scientific definition a hybridization between a group of advanced technologies that allows screening embryos for genetic disorders and selecting the healthy ones also, it allows choosing certain characteristics in the baby to be such as eye color, hair type or even its gender. A designed baby zygote must be produced outside the cell by means of extra cellular or in vitro fertilization (IVF) .The ovum is fertilized by a single spermatozoon by the mean on (ICSI) and allowed to grow, then a cell is removed from the 4-blastomere stage and a second technique screens embryos for a genetic diseases, this is called Pre-implantation Genetic Diagnosis (PGD).These techniques allow doctors and parents to reduce the chance that a child will be born with a genetic disorder. The next step will be germline therapy (GLT) which is performed in order to correct or modify faulty genes. Finally the selected healthy embryo(s) is implanted back into the mother's womb where it develops into a fully grown embryo till the time of birth.


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WED : 24-03-2010

HALL[POSTER]


MICR - 25

EG

MR. HAZEM HASSAN

01:35

:

02:00

[email protected]

THE PROMISE OF STEM CELLS FOR HUMANITY Hazem Hassan El Sayed , Nourhan Yehia Mostafa Cairo Univeristy, Cairo, Egypt Cairo Univeristy, Cairo, Egypt

ABSTRACT For centuries, scientists have known that certain animals can regenerate missing parts of their bodies. Humans actually share this ability with animals like the starfish and the newt. Although we can’t replace a missing leg or a finger, our bodies are constantly regenerating blood, skin, and other tissues. The identity of the powerful cells that allow us to regenerate some tissues was first revealed when experiments with bone marrow in the 1950s established the existence of stem cells in our bodies and led to the development of bone marrow transplantation, a therapy now widely used in medicine. Stem cells give us the chance for treatment of huge number of diseases so, through our dealing with stem cells we have to be guided with main lines as what are the stem cells, the types of stem cells and the advantages of each type and how we can use each one of them, also we have to know how we can work or deal with these cells, diseases that can be treated with stem cells and how it can be done. But dealing with this kind of cells is very complex process, so we have to know its ethical and moral values.


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WED : 24-03-2010

HALL[POSTER]


MICR - 26

EG

MR. MAHMOUD ABDEL WAHAB


ENVIRONMENTAL STUDIES ON SOME HALOPHILIC STRAINS ISOLATED FROM TOSHKA AREA AND ENHANCEMENT OF THEIR CHARACTERS BY USING GAMMA IRRADIATION Zahira S. Tawfik , Bakry M. Haroun , Mahmoud A.W. Mahmoud National center for Radiation Research and Technology (NCRRT) Facility of Science - Azhar University National center for Radiation Research and Technology (NCRRT)

ABSTRACT The present study is tending to throw light on the importance of some new area and study of microbial diversity of this area and isolation of microbial strains resistance to environmental stresses of this area and its application on environmental field such as removal of some toxic heavy metals and using the ability of these isolates to tolerate high concentrations of salinity and high temperature on agriculture field. Total count of colony forming unit of isolates bacteria. Isolation and characterization of bacterial strains resistance to high concentration of salinity and high temperature. In this search we study tolerance of bacterial isolates to cadmium chloride, mercuric chloride and lead acetate, the results revealed that, some strain could tolerate up to 400 ppm of lead acetate and up to 15 ppm of cadmium chloride and up to 2 ppm of mercuric chloride. Determination of D 10 values of bacterial isolates. D 10 value of the eight bacterial isolates (Haloferax mediterranel M1, Natronobacterium pharaoiuns M2, Haloarcula mansmortui M3, Halococcus sacarolyticus M4, Haloferax denitrificans M5, Haloarcula hispanica M6, Haloarcula vallismartis M7 and Haloferax volcanii M8 ) were ( 1.8 , 1.8, 1.4, 1.6, 1.1 , 1.8, 1.9 and 1.0 k Gry) respectively. And study the effect of Gamma irradiation on the tolerance to NaCl and temperature, from search noticed that some strain enhanced their tolerance with irradiation as example, Haloferax mediterranel M1 could tolerated 18% NaCl at 37 0C and at 4,6 and 15 k Gry enhanced its tolerance to be 20 % NaCl at 37 0C. While other could failed for tolerance as example, Haloarcula vallismartis M7 could tolerated 18% NaCl at 37 0C and failed with different doses of Gamma irradiation at 0.5,1,2, 6, 10 and 15 k Gry for tolerance of 18 % NaCl at 37 0C and 50 0C and could tolerate 18 % at dose 4 k Gray at 37 0C. In this study the protein fractionation pattern of SDS-PAGE electrophoresis of eight bacterial strains as compared with protein marker showing variation in banding pattern which reflect difference between characterized isolates.


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WED : 24-03-2010

HALL[POSTER]


MICR - 27

EG

DR. MAHMOUD ABDEL WAHAB

01:35 : 02:00 actinohallo@yahoo,com

ENVIRONMENTAL STUDIES ON SOME HALOPHILIC STRAINS ISOLATED FROM TOSHKA AREA AND ENHANCEMENT OF THEIR CHARACTERS BY USING GAMMA IRRADIATION Zahira S. Tawfik , Bakry M. Haroun , Mahmoud A.W. Mahmoud National center for Radiation Research and Technology (NCRRT) Facility of Science - Azhar University

ABSTRACT The present study is tending to throw light on the importance of some new area and study of microbial diversity of this area and isolation of microbial strains resistance to environmental stresses of this area and its application on environmental field such as removal of some toxic heavy metals and using the ability of these isolates to tolerate high concentrations of salinity and high temperature on agriculture field. Total count of colony forming unit of isolates bacteria. Isolation and characterization of bacterial strains resistance to high concentration of salinity and high temperature. In this search we study tolerance of bacterial isolates to cadmium chloride, mercuric chloride and lead acetate, the results revealed that, some strain could tolerate up to 400 ppm of lead acetate and up to 15 ppm of cadmium chloride and up to 2 ppm of mercuric chloride. Determination of D 10 values of bacterial isolates. D 10 value of the eight bacterial isolates (Haloferax mediterranel M1, Natronobacterium pharaoiuns M2, Haloarcula mansmortui M3, Halococcus sacarolyticus M4, Haloferax denitrificans M5, Haloarcula hispanica M6, Haloarcula vallismartis M7 and Haloferax volcanii M8 ) were ( 1.8 , 1.8, 1.4, 1.6, 1.1 , 1.8, 1.9 and 1.0 k Gry) respectively. And study the effect of Gamma irradiation on the tolerance to NaCl and temperature, from search noticed that some strain enhanced their tolerance with irradiation as example, Haloferax mediterranel M1 could tolerated 18% NaCl at 37 0C and at 4,6 and 15 k Gry enhanced its tolerance to be 20 % NaCl at 37 0C. While other could failed for tolerance as example, Haloarcula vallismartis M7 could tolerated 18% NaCl at 37 0C and failed with different doses of Gamma irradiation at 0.5,1,2, 6, 10 and 15 k Gry for tolerance of 18 % NaCl at 37 0C and 50 0C and could tolerate 18 % at dose 4 k Gray at 37 0C. In this study the protein fractionation pattern of SDS-PAGE electrophoresis of eight bacterial strains as compared with protein marker showing variation in banding pattern which reflect difference between characterized isolates.

Astronomy and Meteorology


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Astronomy and Meteorology 254 286

TUE : 23-03-2010

HALL[B]

ORAL - SEC12 ( 2 )

AST - 1

EG

DR. TAREK SAYAD

01:30

:

01:45

[email protected]

CLIMATIC FEATURES OF THE LONG-WAVE RADIATION COMPONENTS OVER EGYPT AND ITS VARIABILITY DURING 1997 AND 1998 T. A. Sayad , F. M. El-Hussainy , I. M. Amin Department of Astronomy and Meteorology, Faculty of Science, Al Azhar Department of Astronomy and Meteorology, Faculty of Science, Al Azhar Egyptian Meteorological Authority, Cairo Egypt.

ABSTRACT The climatic features of the long-wave radiation components over Egypt are discussed by using monthly mean NCEP/NCAR reanalysis data during the period 1979 to 2006 of these components. Anomalies of these components for individual two years 1997 and 1998 also are discussed over Egypt. From the annual trends of downward long-wave radiation it is found that decreasing in the slope larger in Cairo than Aswan due to decreasing of cloud cover with time over Cairo. While the trends of upward long-wave radiation at surface increasing with time and the rate of increasing for Aswan is more than for Cairo due to larger increasing of temperature at the surface of Aswan than Cairo. The trends of upward long-wave radiation at top of atmosphere increased with time over Cairo larger than Aswan. This means that the amount of convective clouds is decreased over Cairo with time. While the trend of net long-wave radiation at surface increases with time over Aswan larger than Cairo because of increasing of temperature at Aswan larger than Cairo.


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TUE : 23-03-2010

HALL[B]

ORAL - SEC12 ( 3 )

AST - 6

EG

MR. KAMAL GAFAR

01:45

:

02:00

[email protected]

AGROCLIMATIC SUITABILITY FOR WHEAT IN EGYPT Gafar, Kamal , Mehanna, A.M. , El-Hussainy, F.M. , Lashin A. M. Agr. Res. Center/ AlAin/ UAE. Formerly, Met. Authority/ Cairo Met. Authority/ Cairo Faculty of science/ ALAZHAR University/ Cairo Faculty of science/ ALAZHAR University/ Cairo

ABSTRACT Wheat is the 1st food crop for Egyptians. Climate plays an important role in crop production. Climate is the only uncontrollable resource, which varies in space and time, and accordingly crop yield. Thus, optimizing wheat yield requires appropriate climatic use. The aim of this study is to specify when and where to cultivate wheat in Egypt for optimal yield, considering the other agricultural treatments and practices are optimum. For this purpose, we used the climatic data of temperature and actual sunshine duration on 11 apart meteorological stations scanning most Egypt for 24 years through the period 1973-1997. Also, results of 5 experiments for wheat of different cultivars in different regions carried out by agricultural researchers are used, where; planting and harvesting dates and yield of these experiments have been collected. Using the prevailed climate through growth cycles of the 5 experiments, climatic requirements of wheat Egyptian cultivars have been defined, and a relation for estimating yield has been derived. Then, matching to climates of the 11 stations is made for deducing the available climatic growing period and planting and harvesting period of wheat in different regions. The growth cycles and yields have been calculated for three planting appointments: at beginning, middle and end of the planting period in each region. Then, the most suitable time and place for cultivating wheat in Egypt have been specified. We found that climatic growth period decreases southward and ranges between 240 days in Tanta and 182 days in Souhag. The first chance for planting is in 3 October in Tanta and the final chance for harvest is in 1 June in Damanhour. Planting period is widest (83 days) in Giza and begin in the onset of October, and is narrower southward, till be narrowest (7 days) in Luxor and begin in the onset of November. Wheat yield is optimum when planting is through the 1st three weeks in November in north Egypt till Baharia, through the 1st two weeks in November in Elminya till Souhag, and through the 1st one week in November in Souhag to southward. Finally, all Egypt can be cultivated with wheat, but the time chance is wider northward.


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TUE : 23-03-2010

HALL[B]

ORAL - SEC12 ( 4 )

AST - 2

EG

PROF. FATHY EL-HUSSAINY

02:00

:

02:15

[email protected]

ESTIMATING OF DOWNWARD LONG-WAVE RADIATION OVER EGYPT F. M. El-Hussainy , T. A. Sayad , I. M. Amin Department of Astronomy and Meteorology, Faculty of Science, Al Azhar University, Cairo Egypt Department of Astronomy and Meteorology, Faculty of Science, Al Azhar University, Cairo Egypt Egyptian Meteorological Authority, Cairo Egypt.

ABSTRACT The

correlation

coefficient

between

daily

downward

long-wave

radiation

and

daily

Temperature, humidity and amount of cloud is discussed during the period from 1995 to 1998 over Cairo and Aswan. A higher correlation is found with temperature over Cairo than Aswan, while the inverse is noticed with water vapor pressure. Statistical model (Instat) is used to drive a multiple regression for the downward long-wave radiation on temperature, water vapor pressure and cloud amounts. The analysis of variance by three methods is applied to develop empirical equations to evaluate the downward long-wave radiation according to the previous atmospheric parameters. In the first method Brunt equation that depends on Temperature and water vapor pressure is used with the same coefficients but with a large mean error over Cairo (11.1%) and Aswan (23.5%). This equation is improved to meet our local conditions with decreasing in average error to be 6.9% for Cairo and 8.11% for Aswan. In the second method the cloud fraction is added with the other two parameters. It is found that the average errors are decreased to be 4.85 % for Cairo and 4.92 % for Aswan. In the final method cloudy days are separated from clear sky days over Cairo and Aswan. The errors are improved over Aswan than Cairo to be 3.7 %, 3.4 % for Aswan and 4.28 %, 4.27 % for Cairo respectively


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TUE : 23-03-2010

HALL[B]

ORAL - SEC12 ( 5 )

AST - 3

EG

ASSOC.PROF. MOSTAFA IBRAHIM


A METHOD FOR FORECASTING NILE RIVER FLOOD M.M. IBRAHIM , A.A. HASSAN , A.M. LASHEEN Faculty of Science, Dept. of Meteorology and Astronomy, Al-Azhar Univ.,Cairo, EGYPT Meteorological Authority, Former Head of Research Institute, Cairo Egypt Faculty of Science, Dept. of Meteorology and Astronomy, Al-Azhar Univ.,Cairo, EGYPT

ABSTRACT The Nile River is the main source of Egypt fresh water for both agriculture and human use. The large annual variability of Nile River discharge requires studies to understand reasons for this changeability. For economic and agriculture planning it is crucial to be able to forecast the discharge. Although Aswan High Dam reduces significantly the risk of severe shortage of fresh water due to low Nile River discharge, on the scale of few years, still the prediction of Nile River discharge is a crucial issue. Statistical downscaling approach for predicting Nile River discharge reaching Aswan is developed. The approach depends on correlation between the distribution of global large scale fields for some Meteorological variables and the discharge at Aswan (1960-2000). In this work the discharge for the month of September is predicted using August mean Meteorological data. Linear multi-correlation regression equation is obtained. The relative error of Nile River discharge at Aswan as estimated from the multi-linear regression equation, for the period 1960 to 2000, is less than 1%. The multi-regression linear equation is used to forecast the Nile River discharge at Aswan on September using August Meteorological data for the period 2001 to 2009. Yearly trends are rightly forecasted, in the sense that it clarifies high and low discharge years. Relative errors of the forecasted discharge reach